/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:31:55,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:31:55,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:31:55,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:31:55,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:31:56,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:31:56,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:31:56,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:31:56,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:31:56,021 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:31:56,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:31:56,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:31:56,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:31:56,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:31:56,023 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:31:56,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:31:56,024 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:31:56,024 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:31:56,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:31:56,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:31:56,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:31:56,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:31:56,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:31:56,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:31:56,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:31:56,026 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:31:56,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:31:56,026 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:31:56,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:31:56,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:31:56,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:31:56,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:31:56,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:31:56,028 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:31:56,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:31:56,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:31:56,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:31:56,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:31:56,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:31:56,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:31:56,029 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:31:56,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:31:56,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:31:56,029 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:31:56,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:31:56,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:31:56,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:31:56,235 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:31:56,235 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:31:56,236 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-12-21 13:31:57,384 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:31:57,775 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:31:57,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-12-21 13:31:57,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/788418a8f/77a339d17e9b4b57a9e909501374067b/FLAGcca0b3a00 [2023-12-21 13:31:57,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/788418a8f/77a339d17e9b4b57a9e909501374067b [2023-12-21 13:31:57,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:31:57,850 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:31:57,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:31:57,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:31:57,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:31:57,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:31:57" (1/1) ... [2023-12-21 13:31:57,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a4c8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:31:57, skipping insertion in model container [2023-12-21 13:31:57,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:31:57" (1/1) ... [2023-12-21 13:31:58,043 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:31:58,407 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-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2023-12-21 13:31:59,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:31:59,369 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:31:59,433 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-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20004,20017] [2023-12-21 13:32:00,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:32:00,078 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:32:00,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00 WrapperNode [2023-12-21 13:32:00,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:32:00,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:32:00,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:32:00,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:32:00,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,405 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21773 [2023-12-21 13:32:00,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:32:00,406 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:32:00,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:32:00,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:32:00,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,645 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:32:00,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:32:00,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:32:00,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:32:00,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:32:00,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (1/1) ... [2023-12-21 13:32:00,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:32:00,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:32:00,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:32:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:32:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:32:00,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:32:00,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:32:00,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:32:01,454 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:32:01,456 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:32:07,517 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:32:07,632 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:32:07,632 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:32:07,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:32:07 BoogieIcfgContainer [2023-12-21 13:32:07,633 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:32:07,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:32:07,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:32:07,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:32:07,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:31:57" (1/3) ... [2023-12-21 13:32:07,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2650dcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:32:07, skipping insertion in model container [2023-12-21 13:32:07,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:32:00" (2/3) ... [2023-12-21 13:32:07,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2650dcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:32:07, skipping insertion in model container [2023-12-21 13:32:07,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:32:07" (3/3) ... [2023-12-21 13:32:07,639 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-12-21 13:32:07,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:32:07,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:32:07,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:32:07,735 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;@2ca1dd20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:32:07,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:32:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 2873 states, 2871 states have (on average 1.907697666318356) internal successors, (5477), 2872 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:07,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:32:07,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:07,770 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] [2023-12-21 13:32:07,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:07,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:07,774 INFO L85 PathProgramCache]: Analyzing trace with hash -924201457, now seen corresponding path program 1 times [2023-12-21 13:32:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:07,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284936398] [2023-12-21 13:32:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:08,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284936398] [2023-12-21 13:32:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284936398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:08,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:08,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:32:08,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561116824] [2023-12-21 13:32:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:08,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:32:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:08,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:32:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:32:08,387 INFO L87 Difference]: Start difference. First operand has 2873 states, 2871 states have (on average 1.907697666318356) internal successors, (5477), 2872 states have internal predecessors, (5477), 0 states have call successors, (0), 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 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:09,885 INFO L93 Difference]: Finished difference Result 4235 states and 7963 transitions. [2023-12-21 13:32:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:32:09,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-21 13:32:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:09,916 INFO L225 Difference]: With dead ends: 4235 [2023-12-21 13:32:09,916 INFO L226 Difference]: Without dead ends: 2291 [2023-12-21 13:32:09,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:09,927 INFO L413 NwaCegarLoop]: 2660 mSDtfsCounter, 12354 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12354 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:09,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12354 Valid, 2929 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 13:32:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-12-21 13:32:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-12-21 13:32:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2288 states have (on average 1.2963286713286712) internal successors, (2966), 2288 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 2966 transitions. [2023-12-21 13:32:10,025 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 2966 transitions. Word has length 78 [2023-12-21 13:32:10,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:10,027 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 2966 transitions. [2023-12-21 13:32:10,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 2966 transitions. [2023-12-21 13:32:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:32:10,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:10,033 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] [2023-12-21 13:32:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:32:10,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1301065873, now seen corresponding path program 1 times [2023-12-21 13:32:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325982389] [2023-12-21 13:32:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:10,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:10,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325982389] [2023-12-21 13:32:10,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325982389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:10,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:10,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:10,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847807315] [2023-12-21 13:32:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:10,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:10,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:10,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:10,217 INFO L87 Difference]: Start difference. First operand 2289 states and 2966 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:10,302 INFO L93 Difference]: Finished difference Result 3729 states and 4916 transitions. [2023-12-21 13:32:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:10,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:32:10,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:10,312 INFO L225 Difference]: With dead ends: 3729 [2023-12-21 13:32:10,312 INFO L226 Difference]: Without dead ends: 3320 [2023-12-21 13:32:10,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:10,314 INFO L413 NwaCegarLoop]: 3654 mSDtfsCounter, 2332 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 5247 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:10,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2332 Valid, 5247 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2023-12-21 13:32:10,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 3317. [2023-12-21 13:32:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 3316 states have (on average 1.2913148371531966) internal successors, (4282), 3316 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4282 transitions. [2023-12-21 13:32:10,365 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4282 transitions. Word has length 79 [2023-12-21 13:32:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:10,367 INFO L495 AbstractCegarLoop]: Abstraction has 3317 states and 4282 transitions. [2023-12-21 13:32:10,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4282 transitions. [2023-12-21 13:32:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:32:10,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:10,373 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] [2023-12-21 13:32:10,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:32:10,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:10,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash -782671945, now seen corresponding path program 1 times [2023-12-21 13:32:10,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:10,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138861700] [2023-12-21 13:32:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:10,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:10,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:10,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:10,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138861700] [2023-12-21 13:32:10,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138861700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113644450] [2023-12-21 13:32:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:10,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:10,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:10,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:10,494 INFO L87 Difference]: Start difference. First operand 3317 states and 4282 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:10,609 INFO L93 Difference]: Finished difference Result 4530 states and 6088 transitions. [2023-12-21 13:32:10,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:10,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:32:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:10,620 INFO L225 Difference]: With dead ends: 4530 [2023-12-21 13:32:10,620 INFO L226 Difference]: Without dead ends: 3892 [2023-12-21 13:32:10,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:10,625 INFO L413 NwaCegarLoop]: 2774 mSDtfsCounter, 1322 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:10,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1322 Valid, 4386 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:32:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3892 states. [2023-12-21 13:32:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3892 to 3890. [2023-12-21 13:32:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 3889 states have (on average 1.3144767292363075) internal successors, (5112), 3889 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 5112 transitions. [2023-12-21 13:32:10,689 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 5112 transitions. Word has length 79 [2023-12-21 13:32:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:10,693 INFO L495 AbstractCegarLoop]: Abstraction has 3890 states and 5112 transitions. [2023-12-21 13:32:10,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 5112 transitions. [2023-12-21 13:32:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:32:10,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:10,704 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] [2023-12-21 13:32:10,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:32:10,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:10,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1840010013, now seen corresponding path program 1 times [2023-12-21 13:32:10,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601362157] [2023-12-21 13:32:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:10,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:10,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:10,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601362157] [2023-12-21 13:32:10,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601362157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:10,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:10,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815850133] [2023-12-21 13:32:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:10,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:10,935 INFO L87 Difference]: Start difference. First operand 3890 states and 5112 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:11,203 INFO L93 Difference]: Finished difference Result 5856 states and 7976 transitions. [2023-12-21 13:32:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:11,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:32:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:11,216 INFO L225 Difference]: With dead ends: 5856 [2023-12-21 13:32:11,217 INFO L226 Difference]: Without dead ends: 5008 [2023-12-21 13:32:11,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:11,220 INFO L413 NwaCegarLoop]: 2769 mSDtfsCounter, 1248 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:11,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 4367 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:32:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5008 states. [2023-12-21 13:32:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5008 to 5006. [2023-12-21 13:32:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 5005 states have (on average 1.335064935064935) internal successors, (6682), 5005 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 6682 transitions. [2023-12-21 13:32:11,294 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 6682 transitions. Word has length 79 [2023-12-21 13:32:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:11,294 INFO L495 AbstractCegarLoop]: Abstraction has 5006 states and 6682 transitions. [2023-12-21 13:32:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 6682 transitions. [2023-12-21 13:32:11,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:32:11,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:11,301 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] [2023-12-21 13:32:11,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:32:11,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:11,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:11,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1469587710, now seen corresponding path program 1 times [2023-12-21 13:32:11,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:11,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867622773] [2023-12-21 13:32:11,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:11,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:11,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:11,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867622773] [2023-12-21 13:32:11,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867622773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:11,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:11,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:32:11,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846027185] [2023-12-21 13:32:11,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:11,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:32:11,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:11,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:32:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:32:11,458 INFO L87 Difference]: Start difference. First operand 5006 states and 6682 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:12,234 INFO L93 Difference]: Finished difference Result 10069 states and 13840 transitions. [2023-12-21 13:32:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:32:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 13:32:12,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:12,250 INFO L225 Difference]: With dead ends: 10069 [2023-12-21 13:32:12,251 INFO L226 Difference]: Without dead ends: 5937 [2023-12-21 13:32:12,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:12,258 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 6501 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6501 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:12,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6501 Valid, 1417 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:32:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2023-12-21 13:32:12,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5935. [2023-12-21 13:32:12,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5935 states, 5934 states have (on average 1.3816986855409505) internal successors, (8199), 5934 states have internal predecessors, (8199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5935 states to 5935 states and 8199 transitions. [2023-12-21 13:32:12,352 INFO L78 Accepts]: Start accepts. Automaton has 5935 states and 8199 transitions. Word has length 79 [2023-12-21 13:32:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:12,352 INFO L495 AbstractCegarLoop]: Abstraction has 5935 states and 8199 transitions. [2023-12-21 13:32:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:12,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5935 states and 8199 transitions. [2023-12-21 13:32:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:32:12,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:12,359 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] [2023-12-21 13:32:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:32:12,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:12,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash -961390150, now seen corresponding path program 1 times [2023-12-21 13:32:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571689993] [2023-12-21 13:32:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571689993] [2023-12-21 13:32:12,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571689993] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:12,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:12,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:12,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461057478] [2023-12-21 13:32:12,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:12,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:12,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:12,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:12,522 INFO L87 Difference]: Start difference. First operand 5935 states and 8199 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:12,600 INFO L93 Difference]: Finished difference Result 14238 states and 20013 transitions. [2023-12-21 13:32:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:12,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 13:32:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:12,640 INFO L225 Difference]: With dead ends: 14238 [2023-12-21 13:32:12,640 INFO L226 Difference]: Without dead ends: 10049 [2023-12-21 13:32:12,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:12,650 INFO L413 NwaCegarLoop]: 2675 mSDtfsCounter, 1713 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3912 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:12,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3912 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10049 states. [2023-12-21 13:32:12,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10049 to 10035. [2023-12-21 13:32:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10035 states, 10034 states have (on average 1.3841937412796492) internal successors, (13889), 10034 states have internal predecessors, (13889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10035 states to 10035 states and 13889 transitions. [2023-12-21 13:32:12,813 INFO L78 Accepts]: Start accepts. Automaton has 10035 states and 13889 transitions. Word has length 80 [2023-12-21 13:32:12,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:12,813 INFO L495 AbstractCegarLoop]: Abstraction has 10035 states and 13889 transitions. [2023-12-21 13:32:12,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 10035 states and 13889 transitions. [2023-12-21 13:32:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:32:12,824 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:12,824 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] [2023-12-21 13:32:12,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:32:12,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:12,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:12,825 INFO L85 PathProgramCache]: Analyzing trace with hash 473457151, now seen corresponding path program 1 times [2023-12-21 13:32:12,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:12,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832740154] [2023-12-21 13:32:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:12,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:12,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832740154] [2023-12-21 13:32:12,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832740154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:12,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:12,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:32:12,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884216346] [2023-12-21 13:32:12,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:32:12,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:32:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:32:12,960 INFO L87 Difference]: Start difference. First operand 10035 states and 13889 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:13,827 INFO L93 Difference]: Finished difference Result 20208 states and 28251 transitions. [2023-12-21 13:32:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:32:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 13:32:13,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:13,845 INFO L225 Difference]: With dead ends: 20208 [2023-12-21 13:32:13,845 INFO L226 Difference]: Without dead ends: 11955 [2023-12-21 13:32:13,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:13,857 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 5381 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5381 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:13,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5381 Valid, 1119 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:32:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11955 states. [2023-12-21 13:32:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11955 to 11929. [2023-12-21 13:32:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11929 states, 11928 states have (on average 1.3771797451374916) internal successors, (16427), 11928 states have internal predecessors, (16427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11929 states to 11929 states and 16427 transitions. [2023-12-21 13:32:14,085 INFO L78 Accepts]: Start accepts. Automaton has 11929 states and 16427 transitions. Word has length 80 [2023-12-21 13:32:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:14,085 INFO L495 AbstractCegarLoop]: Abstraction has 11929 states and 16427 transitions. [2023-12-21 13:32:14,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 11929 states and 16427 transitions. [2023-12-21 13:32:14,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:32:14,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:14,097 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] [2023-12-21 13:32:14,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:32:14,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:14,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1860348150, now seen corresponding path program 1 times [2023-12-21 13:32:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:14,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59322377] [2023-12-21 13:32:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:14,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:14,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59322377] [2023-12-21 13:32:14,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59322377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:14,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:14,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:32:14,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420418629] [2023-12-21 13:32:14,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:14,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:32:14,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:14,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:32:14,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:32:14,247 INFO L87 Difference]: Start difference. First operand 11929 states and 16427 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:14,886 INFO L93 Difference]: Finished difference Result 29977 states and 42078 transitions. [2023-12-21 13:32:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:32:14,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-21 13:32:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:14,915 INFO L225 Difference]: With dead ends: 29977 [2023-12-21 13:32:14,915 INFO L226 Difference]: Without dead ends: 18831 [2023-12-21 13:32:14,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:14,931 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 4604 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:14,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4604 Valid, 1037 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:32:14,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18831 states. [2023-12-21 13:32:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18831 to 18829. [2023-12-21 13:32:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18829 states, 18828 states have (on average 1.4027512215848736) internal successors, (26411), 18828 states have internal predecessors, (26411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18829 states to 18829 states and 26411 transitions. [2023-12-21 13:32:15,214 INFO L78 Accepts]: Start accepts. Automaton has 18829 states and 26411 transitions. Word has length 80 [2023-12-21 13:32:15,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:15,214 INFO L495 AbstractCegarLoop]: Abstraction has 18829 states and 26411 transitions. [2023-12-21 13:32:15,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 18829 states and 26411 transitions. [2023-12-21 13:32:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 13:32:15,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:15,228 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] [2023-12-21 13:32:15,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:32:15,229 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:15,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2048024899, now seen corresponding path program 1 times [2023-12-21 13:32:15,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116352113] [2023-12-21 13:32:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:15,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:15,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116352113] [2023-12-21 13:32:15,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116352113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:15,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:15,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:32:15,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704114401] [2023-12-21 13:32:15,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:32:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:32:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:15,329 INFO L87 Difference]: Start difference. First operand 18829 states and 26411 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:15,454 INFO L93 Difference]: Finished difference Result 41251 states and 58248 transitions. [2023-12-21 13:32:15,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:32:15,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-21 13:32:15,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:15,498 INFO L225 Difference]: With dead ends: 41251 [2023-12-21 13:32:15,498 INFO L226 Difference]: Without dead ends: 26202 [2023-12-21 13:32:15,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:32:15,520 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 1083 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 2669 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:32:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26202 states. [2023-12-21 13:32:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26202 to 26128. [2023-12-21 13:32:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26128 states, 26127 states have (on average 1.3844681746851915) internal successors, (36172), 26127 states have internal predecessors, (36172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26128 states to 26128 states and 36172 transitions. [2023-12-21 13:32:15,913 INFO L78 Accepts]: Start accepts. Automaton has 26128 states and 36172 transitions. Word has length 81 [2023-12-21 13:32:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:15,914 INFO L495 AbstractCegarLoop]: Abstraction has 26128 states and 36172 transitions. [2023-12-21 13:32:15,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 26128 states and 36172 transitions. [2023-12-21 13:32:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-21 13:32:15,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:15,931 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] [2023-12-21 13:32:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:32:15,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:15,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash -963543678, now seen corresponding path program 1 times [2023-12-21 13:32:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:15,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402553562] [2023-12-21 13:32:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:16,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402553562] [2023-12-21 13:32:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402553562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:16,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:32:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054176909] [2023-12-21 13:32:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:16,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:32:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:32:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:32:16,113 INFO L87 Difference]: Start difference. First operand 26128 states and 36172 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:16,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:16,832 INFO L93 Difference]: Finished difference Result 60135 states and 83674 transitions. [2023-12-21 13:32:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:32:16,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-12-21 13:32:16,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:16,878 INFO L225 Difference]: With dead ends: 60135 [2023-12-21 13:32:16,878 INFO L226 Difference]: Without dead ends: 35279 [2023-12-21 13:32:16,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:16,906 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 3916 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:16,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3916 Valid, 885 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:32:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35279 states. [2023-12-21 13:32:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35279 to 35169. [2023-12-21 13:32:17,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35169 states, 35168 states have (on average 1.3829902183803457) internal successors, (48637), 35168 states have internal predecessors, (48637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35169 states to 35169 states and 48637 transitions. [2023-12-21 13:32:17,440 INFO L78 Accepts]: Start accepts. Automaton has 35169 states and 48637 transitions. Word has length 82 [2023-12-21 13:32:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:17,440 INFO L495 AbstractCegarLoop]: Abstraction has 35169 states and 48637 transitions. [2023-12-21 13:32:17,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 35169 states and 48637 transitions. [2023-12-21 13:32:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:32:17,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:17,462 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] [2023-12-21 13:32:17,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:32:17,462 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:17,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:17,463 INFO L85 PathProgramCache]: Analyzing trace with hash 940732972, now seen corresponding path program 1 times [2023-12-21 13:32:17,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:17,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315038083] [2023-12-21 13:32:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:17,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:17,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:17,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315038083] [2023-12-21 13:32:17,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315038083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:17,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:17,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:17,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777811763] [2023-12-21 13:32:17,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:17,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:17,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:17,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:17,633 INFO L87 Difference]: Start difference. First operand 35169 states and 48637 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:18,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:18,721 INFO L93 Difference]: Finished difference Result 126395 states and 176738 transitions. [2023-12-21 13:32:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:18,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-21 13:32:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:18,867 INFO L225 Difference]: With dead ends: 126395 [2023-12-21 13:32:18,867 INFO L226 Difference]: Without dead ends: 109220 [2023-12-21 13:32:18,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:18,911 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 6406 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6406 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:18,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6406 Valid, 1840 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:32:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109220 states. [2023-12-21 13:32:20,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109220 to 35225. [2023-12-21 13:32:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35225 states, 35224 states have (on average 1.3828355666590961) internal successors, (48709), 35224 states have internal predecessors, (48709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35225 states to 35225 states and 48709 transitions. [2023-12-21 13:32:20,140 INFO L78 Accepts]: Start accepts. Automaton has 35225 states and 48709 transitions. Word has length 83 [2023-12-21 13:32:20,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:20,140 INFO L495 AbstractCegarLoop]: Abstraction has 35225 states and 48709 transitions. [2023-12-21 13:32:20,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:20,141 INFO L276 IsEmpty]: Start isEmpty. Operand 35225 states and 48709 transitions. [2023-12-21 13:32:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:32:20,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:20,161 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] [2023-12-21 13:32:20,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:32:20,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:20,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:20,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1898621657, now seen corresponding path program 1 times [2023-12-21 13:32:20,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:20,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272541181] [2023-12-21 13:32:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:20,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:20,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:20,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272541181] [2023-12-21 13:32:20,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272541181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:20,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:20,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:20,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375637654] [2023-12-21 13:32:20,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:20,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:20,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:20,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:20,365 INFO L87 Difference]: Start difference. First operand 35225 states and 48709 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:21,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:21,971 INFO L93 Difference]: Finished difference Result 137748 states and 193190 transitions. [2023-12-21 13:32:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:21,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-21 13:32:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:22,169 INFO L225 Difference]: With dead ends: 137748 [2023-12-21 13:32:22,169 INFO L226 Difference]: Without dead ends: 122356 [2023-12-21 13:32:22,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:22,208 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 5303 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5303 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:22,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5303 Valid, 1951 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 13:32:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122356 states. [2023-12-21 13:32:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122356 to 35448. [2023-12-21 13:32:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35448 states, 35447 states have (on average 1.3828532739018817) internal successors, (49018), 35447 states have internal predecessors, (49018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35448 states to 35448 states and 49018 transitions. [2023-12-21 13:32:23,378 INFO L78 Accepts]: Start accepts. Automaton has 35448 states and 49018 transitions. Word has length 83 [2023-12-21 13:32:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:23,378 INFO L495 AbstractCegarLoop]: Abstraction has 35448 states and 49018 transitions. [2023-12-21 13:32:23,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 35448 states and 49018 transitions. [2023-12-21 13:32:23,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:32:23,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:23,393 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] [2023-12-21 13:32:23,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:32:23,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:23,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:23,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2012790539, now seen corresponding path program 1 times [2023-12-21 13:32:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:23,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046177668] [2023-12-21 13:32:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:23,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:23,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046177668] [2023-12-21 13:32:23,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046177668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:23,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:23,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:23,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393376206] [2023-12-21 13:32:23,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:23,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:23,573 INFO L87 Difference]: Start difference. First operand 35448 states and 49018 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:24,963 INFO L93 Difference]: Finished difference Result 183514 states and 258921 transitions. [2023-12-21 13:32:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:24,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-21 13:32:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:25,380 INFO L225 Difference]: With dead ends: 183514 [2023-12-21 13:32:25,380 INFO L226 Difference]: Without dead ends: 170155 [2023-12-21 13:32:25,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:25,455 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 7565 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7565 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:25,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7565 Valid, 1853 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:32:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170155 states. [2023-12-21 13:32:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170155 to 35584. [2023-12-21 13:32:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35584 states, 35583 states have (on average 1.382514121912149) internal successors, (49194), 35583 states have internal predecessors, (49194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35584 states to 35584 states and 49194 transitions. [2023-12-21 13:32:26,874 INFO L78 Accepts]: Start accepts. Automaton has 35584 states and 49194 transitions. Word has length 83 [2023-12-21 13:32:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:26,874 INFO L495 AbstractCegarLoop]: Abstraction has 35584 states and 49194 transitions. [2023-12-21 13:32:26,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 35584 states and 49194 transitions. [2023-12-21 13:32:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:32:26,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:26,890 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] [2023-12-21 13:32:26,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:32:26,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:26,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 598779131, now seen corresponding path program 1 times [2023-12-21 13:32:26,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:26,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980591962] [2023-12-21 13:32:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:26,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980591962] [2023-12-21 13:32:27,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980591962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:27,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:27,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110632016] [2023-12-21 13:32:27,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:27,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:27,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:27,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:27,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:27,038 INFO L87 Difference]: Start difference. First operand 35584 states and 49194 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:28,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:28,560 INFO L93 Difference]: Finished difference Result 171777 states and 241909 transitions. [2023-12-21 13:32:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:28,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-21 13:32:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:28,778 INFO L225 Difference]: With dead ends: 171777 [2023-12-21 13:32:28,778 INFO L226 Difference]: Without dead ends: 154645 [2023-12-21 13:32:28,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:28,813 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 7047 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7047 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:28,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7047 Valid, 1823 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:32:28,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154645 states. [2023-12-21 13:32:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154645 to 35917. [2023-12-21 13:32:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35917 states, 35916 states have (on average 1.3819746074173072) internal successors, (49635), 35916 states have internal predecessors, (49635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35917 states to 35917 states and 49635 transitions. [2023-12-21 13:32:30,147 INFO L78 Accepts]: Start accepts. Automaton has 35917 states and 49635 transitions. Word has length 83 [2023-12-21 13:32:30,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:30,147 INFO L495 AbstractCegarLoop]: Abstraction has 35917 states and 49635 transitions. [2023-12-21 13:32:30,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 35917 states and 49635 transitions. [2023-12-21 13:32:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 13:32:30,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:30,283 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] [2023-12-21 13:32:30,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:32:30,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:30,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash 65724815, now seen corresponding path program 1 times [2023-12-21 13:32:30,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:30,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232332332] [2023-12-21 13:32:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:30,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:30,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232332332] [2023-12-21 13:32:30,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232332332] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:30,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:30,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:30,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007246515] [2023-12-21 13:32:30,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:30,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:30,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:30,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:30,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:30,468 INFO L87 Difference]: Start difference. First operand 35917 states and 49635 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:31,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:31,688 INFO L93 Difference]: Finished difference Result 155749 states and 218783 transitions. [2023-12-21 13:32:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:31,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-12-21 13:32:31,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:31,863 INFO L225 Difference]: With dead ends: 155749 [2023-12-21 13:32:31,863 INFO L226 Difference]: Without dead ends: 139265 [2023-12-21 13:32:31,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:31,909 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 6651 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6651 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:31,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6651 Valid, 1804 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:32:32,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139265 states. [2023-12-21 13:32:33,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139265 to 36493. [2023-12-21 13:32:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36493 states, 36492 states have (on average 1.3812616463882494) internal successors, (50405), 36492 states have internal predecessors, (50405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36493 states to 36493 states and 50405 transitions. [2023-12-21 13:32:33,124 INFO L78 Accepts]: Start accepts. Automaton has 36493 states and 50405 transitions. Word has length 83 [2023-12-21 13:32:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:33,124 INFO L495 AbstractCegarLoop]: Abstraction has 36493 states and 50405 transitions. [2023-12-21 13:32:33,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:33,124 INFO L276 IsEmpty]: Start isEmpty. Operand 36493 states and 50405 transitions. [2023-12-21 13:32:33,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:33,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:33,142 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] [2023-12-21 13:32:33,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:32:33,142 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:33,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash 243433032, now seen corresponding path program 1 times [2023-12-21 13:32:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:33,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385520684] [2023-12-21 13:32:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:33,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:33,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385520684] [2023-12-21 13:32:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385520684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:33,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:32:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441116518] [2023-12-21 13:32:33,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:33,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:32:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:32:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:32:33,438 INFO L87 Difference]: Start difference. First operand 36493 states and 50405 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:34,978 INFO L93 Difference]: Finished difference Result 118178 states and 166799 transitions. [2023-12-21 13:32:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:32:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:35,266 INFO L225 Difference]: With dead ends: 118178 [2023-12-21 13:32:35,267 INFO L226 Difference]: Without dead ends: 94955 [2023-12-21 13:32:35,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:32:35,289 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 4741 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4741 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:35,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4741 Valid, 3212 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 13:32:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94955 states. [2023-12-21 13:32:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94955 to 36425. [2023-12-21 13:32:35,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36425 states, 36424 states have (on average 1.3809850647924446) internal successors, (50301), 36424 states have internal predecessors, (50301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:36,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36425 states to 36425 states and 50301 transitions. [2023-12-21 13:32:36,040 INFO L78 Accepts]: Start accepts. Automaton has 36425 states and 50301 transitions. Word has length 84 [2023-12-21 13:32:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:36,040 INFO L495 AbstractCegarLoop]: Abstraction has 36425 states and 50301 transitions. [2023-12-21 13:32:36,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 36425 states and 50301 transitions. [2023-12-21 13:32:36,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:36,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:36,056 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] [2023-12-21 13:32:36,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:32:36,056 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:36,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1447975722, now seen corresponding path program 1 times [2023-12-21 13:32:36,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:36,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063057020] [2023-12-21 13:32:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:36,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063057020] [2023-12-21 13:32:36,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063057020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:36,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:36,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:36,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268611707] [2023-12-21 13:32:36,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:36,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:36,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:36,332 INFO L87 Difference]: Start difference. First operand 36425 states and 50301 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:37,805 INFO L93 Difference]: Finished difference Result 153697 states and 216271 transitions. [2023-12-21 13:32:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:37,961 INFO L225 Difference]: With dead ends: 153697 [2023-12-21 13:32:37,962 INFO L226 Difference]: Without dead ends: 138085 [2023-12-21 13:32:37,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:37,984 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 5480 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5480 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:37,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5480 Valid, 1981 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:32:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138085 states. [2023-12-21 13:32:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138085 to 36545. [2023-12-21 13:32:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36545 states, 36544 states have (on average 1.3808285901926445) internal successors, (50461), 36544 states have internal predecessors, (50461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36545 states to 36545 states and 50461 transitions. [2023-12-21 13:32:39,194 INFO L78 Accepts]: Start accepts. Automaton has 36545 states and 50461 transitions. Word has length 84 [2023-12-21 13:32:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:39,195 INFO L495 AbstractCegarLoop]: Abstraction has 36545 states and 50461 transitions. [2023-12-21 13:32:39,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 36545 states and 50461 transitions. [2023-12-21 13:32:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:39,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:39,211 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] [2023-12-21 13:32:39,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:32:39,212 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:39,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1846361066, now seen corresponding path program 1 times [2023-12-21 13:32:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:39,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035822558] [2023-12-21 13:32:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:39,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:39,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035822558] [2023-12-21 13:32:39,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035822558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:39,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:39,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:39,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801238159] [2023-12-21 13:32:39,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:39,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:39,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:39,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:39,378 INFO L87 Difference]: Start difference. First operand 36545 states and 50461 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:40,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:40,731 INFO L93 Difference]: Finished difference Result 139263 states and 195177 transitions. [2023-12-21 13:32:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:40,913 INFO L225 Difference]: With dead ends: 139263 [2023-12-21 13:32:40,913 INFO L226 Difference]: Without dead ends: 123835 [2023-12-21 13:32:40,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:40,978 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 5291 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:40,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 1952 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 13:32:41,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123835 states. [2023-12-21 13:32:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123835 to 36835. [2023-12-21 13:32:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36835 states, 36834 states have (on average 1.3809252321224956) internal successors, (50865), 36834 states have internal predecessors, (50865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36835 states to 36835 states and 50865 transitions. [2023-12-21 13:32:42,307 INFO L78 Accepts]: Start accepts. Automaton has 36835 states and 50865 transitions. Word has length 84 [2023-12-21 13:32:42,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:42,307 INFO L495 AbstractCegarLoop]: Abstraction has 36835 states and 50865 transitions. [2023-12-21 13:32:42,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 36835 states and 50865 transitions. [2023-12-21 13:32:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:42,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:42,323 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] [2023-12-21 13:32:42,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:32:42,323 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:42,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:42,324 INFO L85 PathProgramCache]: Analyzing trace with hash -860991493, now seen corresponding path program 1 times [2023-12-21 13:32:42,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:42,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515535361] [2023-12-21 13:32:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:42,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:42,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515535361] [2023-12-21 13:32:42,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515535361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:42,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:42,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:32:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251062589] [2023-12-21 13:32:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:42,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:32:42,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:42,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:32:42,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:32:42,750 INFO L87 Difference]: Start difference. First operand 36835 states and 50865 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:44,168 INFO L93 Difference]: Finished difference Result 118515 states and 167317 transitions. [2023-12-21 13:32:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:32:44,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:44,267 INFO L225 Difference]: With dead ends: 118515 [2023-12-21 13:32:44,267 INFO L226 Difference]: Without dead ends: 95256 [2023-12-21 13:32:44,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:32:44,300 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 4884 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:44,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4884 Valid, 3128 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 13:32:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95256 states. [2023-12-21 13:32:45,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95256 to 36749. [2023-12-21 13:32:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36749 states, 36748 states have (on average 1.3807826276259934) internal successors, (50741), 36748 states have internal predecessors, (50741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:45,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36749 states to 36749 states and 50741 transitions. [2023-12-21 13:32:45,214 INFO L78 Accepts]: Start accepts. Automaton has 36749 states and 50741 transitions. Word has length 84 [2023-12-21 13:32:45,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:45,214 INFO L495 AbstractCegarLoop]: Abstraction has 36749 states and 50741 transitions. [2023-12-21 13:32:45,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 36749 states and 50741 transitions. [2023-12-21 13:32:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:45,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:45,246 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] [2023-12-21 13:32:45,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:32:45,246 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:45,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1078841363, now seen corresponding path program 1 times [2023-12-21 13:32:45,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:45,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93236851] [2023-12-21 13:32:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:45,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:45,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:45,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93236851] [2023-12-21 13:32:45,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93236851] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:45,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:45,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:45,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964516823] [2023-12-21 13:32:45,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:45,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:45,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:45,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:45,539 INFO L87 Difference]: Start difference. First operand 36749 states and 50741 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:46,823 INFO L93 Difference]: Finished difference Result 169443 states and 239048 transitions. [2023-12-21 13:32:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:46,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:47,031 INFO L225 Difference]: With dead ends: 169443 [2023-12-21 13:32:47,031 INFO L226 Difference]: Without dead ends: 153735 [2023-12-21 13:32:47,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:47,271 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 5720 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5720 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:47,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5720 Valid, 2016 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:32:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153735 states. [2023-12-21 13:32:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153735 to 36824. [2023-12-21 13:32:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36824 states, 36823 states have (on average 1.3806859843032888) internal successors, (50841), 36823 states have internal predecessors, (50841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36824 states to 36824 states and 50841 transitions. [2023-12-21 13:32:48,544 INFO L78 Accepts]: Start accepts. Automaton has 36824 states and 50841 transitions. Word has length 84 [2023-12-21 13:32:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:48,545 INFO L495 AbstractCegarLoop]: Abstraction has 36824 states and 50841 transitions. [2023-12-21 13:32:48,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 36824 states and 50841 transitions. [2023-12-21 13:32:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:48,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:48,559 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] [2023-12-21 13:32:48,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:32:48,560 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:48,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash -751519819, now seen corresponding path program 1 times [2023-12-21 13:32:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931314809] [2023-12-21 13:32:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:48,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931314809] [2023-12-21 13:32:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931314809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:48,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:48,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:32:48,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639397225] [2023-12-21 13:32:48,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:48,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:32:48,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:48,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:32:48,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:32:48,999 INFO L87 Difference]: Start difference. First operand 36824 states and 50841 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:50,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:50,462 INFO L93 Difference]: Finished difference Result 110444 states and 155614 transitions. [2023-12-21 13:32:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:32:50,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:50,561 INFO L225 Difference]: With dead ends: 110444 [2023-12-21 13:32:50,562 INFO L226 Difference]: Without dead ends: 86303 [2023-12-21 13:32:50,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:32:50,573 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 4290 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 2454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:50,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 3673 Invalid, 2454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 13:32:50,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86303 states. [2023-12-21 13:32:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86303 to 36282. [2023-12-21 13:32:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36282 states, 36281 states have (on average 1.3809983186791985) internal successors, (50104), 36281 states have internal predecessors, (50104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36282 states to 36282 states and 50104 transitions. [2023-12-21 13:32:51,354 INFO L78 Accepts]: Start accepts. Automaton has 36282 states and 50104 transitions. Word has length 84 [2023-12-21 13:32:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:51,354 INFO L495 AbstractCegarLoop]: Abstraction has 36282 states and 50104 transitions. [2023-12-21 13:32:51,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 36282 states and 50104 transitions. [2023-12-21 13:32:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:51,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:51,370 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] [2023-12-21 13:32:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:32:51,371 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:51,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash 285861585, now seen corresponding path program 1 times [2023-12-21 13:32:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:51,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814936115] [2023-12-21 13:32:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:51,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:51,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:51,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814936115] [2023-12-21 13:32:51,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814936115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:51,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:51,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116839500] [2023-12-21 13:32:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:51,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:51,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:51,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:51,656 INFO L87 Difference]: Start difference. First operand 36282 states and 50104 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:52,966 INFO L93 Difference]: Finished difference Result 138750 states and 194486 transitions. [2023-12-21 13:32:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:32:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:53,120 INFO L225 Difference]: With dead ends: 138750 [2023-12-21 13:32:53,120 INFO L226 Difference]: Without dead ends: 123322 [2023-12-21 13:32:53,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:32:53,141 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 5281 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5281 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:53,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5281 Valid, 1951 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:32:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123322 states. [2023-12-21 13:32:54,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123322 to 36578. [2023-12-21 13:32:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36578 states, 36577 states have (on average 1.381141154277278) internal successors, (50518), 36577 states have internal predecessors, (50518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36578 states to 36578 states and 50518 transitions. [2023-12-21 13:32:54,240 INFO L78 Accepts]: Start accepts. Automaton has 36578 states and 50518 transitions. Word has length 84 [2023-12-21 13:32:54,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:54,240 INFO L495 AbstractCegarLoop]: Abstraction has 36578 states and 50518 transitions. [2023-12-21 13:32:54,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:54,241 INFO L276 IsEmpty]: Start isEmpty. Operand 36578 states and 50518 transitions. [2023-12-21 13:32:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:54,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:54,259 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] [2023-12-21 13:32:54,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:32:54,259 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:54,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash 684246929, now seen corresponding path program 1 times [2023-12-21 13:32:54,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:54,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721422540] [2023-12-21 13:32:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:54,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:54,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:54,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721422540] [2023-12-21 13:32:54,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721422540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:54,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:54,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:32:54,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168042400] [2023-12-21 13:32:54,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:54,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:32:54,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:32:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:32:54,512 INFO L87 Difference]: Start difference. First operand 36578 states and 50518 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:56,352 INFO L93 Difference]: Finished difference Result 117350 states and 165579 transitions. [2023-12-21 13:32:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:32:56,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:56,462 INFO L225 Difference]: With dead ends: 117350 [2023-12-21 13:32:56,462 INFO L226 Difference]: Without dead ends: 94215 [2023-12-21 13:32:56,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:32:56,501 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 4637 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 2465 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3353 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:56,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3353 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2465 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 13:32:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94215 states. [2023-12-21 13:32:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94215 to 36554. [2023-12-21 13:32:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36554 states, 36553 states have (on average 1.3807348234071075) internal successors, (50470), 36553 states have internal predecessors, (50470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:57,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36554 states to 36554 states and 50470 transitions. [2023-12-21 13:32:57,488 INFO L78 Accepts]: Start accepts. Automaton has 36554 states and 50470 transitions. Word has length 84 [2023-12-21 13:32:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:32:57,488 INFO L495 AbstractCegarLoop]: Abstraction has 36554 states and 50470 transitions. [2023-12-21 13:32:57,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 36554 states and 50470 transitions. [2023-12-21 13:32:57,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 13:32:57,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:32:57,504 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] [2023-12-21 13:32:57,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:32:57,504 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:32:57,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:32:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1953439629, now seen corresponding path program 1 times [2023-12-21 13:32:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:32:57,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444609393] [2023-12-21 13:32:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:32:57,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:32:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:32:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:32:57,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:32:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444609393] [2023-12-21 13:32:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444609393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:32:57,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:32:57,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:32:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044335290] [2023-12-21 13:32:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:32:57,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:32:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:32:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:32:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:32:57,722 INFO L87 Difference]: Start difference. First operand 36554 states and 50470 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:32:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:32:59,285 INFO L93 Difference]: Finished difference Result 102040 states and 143447 transitions. [2023-12-21 13:32:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:32:59,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-12-21 13:32:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:32:59,369 INFO L225 Difference]: With dead ends: 102040 [2023-12-21 13:32:59,369 INFO L226 Difference]: Without dead ends: 75839 [2023-12-21 13:32:59,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:32:59,396 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 4144 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4144 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:32:59,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4144 Valid, 2803 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 13:32:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75839 states. [2023-12-21 13:32:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75839 to 35213. [2023-12-21 13:33:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35213 states, 35212 states have (on average 1.380239691014427) internal successors, (48601), 35212 states have internal predecessors, (48601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35213 states to 35213 states and 48601 transitions. [2023-12-21 13:33:00,075 INFO L78 Accepts]: Start accepts. Automaton has 35213 states and 48601 transitions. Word has length 84 [2023-12-21 13:33:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:00,075 INFO L495 AbstractCegarLoop]: Abstraction has 35213 states and 48601 transitions. [2023-12-21 13:33:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 35213 states and 48601 transitions. [2023-12-21 13:33:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:33:00,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:00,091 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] [2023-12-21 13:33:00,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:33:00,091 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:00,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash 754780750, now seen corresponding path program 1 times [2023-12-21 13:33:00,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:00,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544733539] [2023-12-21 13:33:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:00,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544733539] [2023-12-21 13:33:00,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544733539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:00,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:00,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:33:00,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047647951] [2023-12-21 13:33:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:00,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:33:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:33:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:33:00,298 INFO L87 Difference]: Start difference. First operand 35213 states and 48601 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:01,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:01,856 INFO L93 Difference]: Finished difference Result 116937 states and 165082 transitions. [2023-12-21 13:33:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:33:01,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 13:33:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:01,966 INFO L225 Difference]: With dead ends: 116937 [2023-12-21 13:33:01,966 INFO L226 Difference]: Without dead ends: 92950 [2023-12-21 13:33:02,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-12-21 13:33:02,007 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 3259 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3259 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:02,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3259 Valid, 3348 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 13:33:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92950 states. [2023-12-21 13:33:02,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92950 to 34742. [2023-12-21 13:33:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34742 states, 34741 states have (on average 1.3805302092628307) internal successors, (47961), 34741 states have internal predecessors, (47961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:03,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34742 states to 34742 states and 47961 transitions. [2023-12-21 13:33:03,051 INFO L78 Accepts]: Start accepts. Automaton has 34742 states and 47961 transitions. Word has length 85 [2023-12-21 13:33:03,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:03,051 INFO L495 AbstractCegarLoop]: Abstraction has 34742 states and 47961 transitions. [2023-12-21 13:33:03,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 34742 states and 47961 transitions. [2023-12-21 13:33:03,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:33:03,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:03,067 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] [2023-12-21 13:33:03,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:33:03,067 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:03,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash 863427170, now seen corresponding path program 1 times [2023-12-21 13:33:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:03,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408068436] [2023-12-21 13:33:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:03,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408068436] [2023-12-21 13:33:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408068436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:03,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:03,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:33:03,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823093792] [2023-12-21 13:33:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:03,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:33:03,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:33:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:33:03,715 INFO L87 Difference]: Start difference. First operand 34742 states and 47961 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:05,037 INFO L93 Difference]: Finished difference Result 154044 states and 217743 transitions. [2023-12-21 13:33:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 13:33:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 13:33:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:05,214 INFO L225 Difference]: With dead ends: 154044 [2023-12-21 13:33:05,214 INFO L226 Difference]: Without dead ends: 129657 [2023-12-21 13:33:05,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:33:05,246 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 6024 mSDsluCounter, 7833 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6024 SdHoareTripleChecker+Valid, 9332 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:05,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6024 Valid, 9332 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:33:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129657 states. [2023-12-21 13:33:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129657 to 33401. [2023-12-21 13:33:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33401 states, 33400 states have (on average 1.3834730538922155) internal successors, (46208), 33400 states have internal predecessors, (46208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33401 states to 33401 states and 46208 transitions. [2023-12-21 13:33:06,308 INFO L78 Accepts]: Start accepts. Automaton has 33401 states and 46208 transitions. Word has length 85 [2023-12-21 13:33:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:06,309 INFO L495 AbstractCegarLoop]: Abstraction has 33401 states and 46208 transitions. [2023-12-21 13:33:06,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 33401 states and 46208 transitions. [2023-12-21 13:33:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:33:06,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:06,323 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] [2023-12-21 13:33:06,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:33:06,323 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:06,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:06,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1044523368, now seen corresponding path program 1 times [2023-12-21 13:33:06,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:06,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900557040] [2023-12-21 13:33:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:06,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:06,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:06,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900557040] [2023-12-21 13:33:06,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900557040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:06,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:06,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:33:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520475900] [2023-12-21 13:33:06,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:06,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:33:06,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:06,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:33:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:33:06,919 INFO L87 Difference]: Start difference. First operand 33401 states and 46208 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:08,504 INFO L93 Difference]: Finished difference Result 152275 states and 216234 transitions. [2023-12-21 13:33:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 13:33:08,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 13:33:08,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:08,732 INFO L225 Difference]: With dead ends: 152275 [2023-12-21 13:33:08,732 INFO L226 Difference]: Without dead ends: 128917 [2023-12-21 13:33:08,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:33:08,797 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 5569 mSDsluCounter, 6768 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5569 SdHoareTripleChecker+Valid, 8065 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:08,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5569 Valid, 8065 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:33:08,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128917 states. [2023-12-21 13:33:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128917 to 33130. [2023-12-21 13:33:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33130 states, 33129 states have (on average 1.3833801201364364) internal successors, (45830), 33129 states have internal predecessors, (45830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33130 states to 33130 states and 45830 transitions. [2023-12-21 13:33:10,074 INFO L78 Accepts]: Start accepts. Automaton has 33130 states and 45830 transitions. Word has length 85 [2023-12-21 13:33:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:10,074 INFO L495 AbstractCegarLoop]: Abstraction has 33130 states and 45830 transitions. [2023-12-21 13:33:10,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:10,075 INFO L276 IsEmpty]: Start isEmpty. Operand 33130 states and 45830 transitions. [2023-12-21 13:33:10,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:33:10,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:10,090 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] [2023-12-21 13:33:10,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:33:10,090 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:10,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:10,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1551280976, now seen corresponding path program 1 times [2023-12-21 13:33:10,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:10,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481627422] [2023-12-21 13:33:10,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:10,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481627422] [2023-12-21 13:33:10,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481627422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:10,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:10,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:33:10,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358266009] [2023-12-21 13:33:10,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:10,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:33:10,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:10,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:33:10,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:33:10,702 INFO L87 Difference]: Start difference. First operand 33130 states and 45830 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:11,707 INFO L93 Difference]: Finished difference Result 135332 states and 191946 transitions. [2023-12-21 13:33:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:33:11,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 13:33:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:11,857 INFO L225 Difference]: With dead ends: 135332 [2023-12-21 13:33:11,858 INFO L226 Difference]: Without dead ends: 111486 [2023-12-21 13:33:11,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:33:11,910 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 2839 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2839 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:11,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2839 Valid, 4812 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:33:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111486 states. [2023-12-21 13:33:12,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111486 to 32450. [2023-12-21 13:33:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32450 states, 32449 states have (on average 1.3831242873432155) internal successors, (44881), 32449 states have internal predecessors, (44881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32450 states to 32450 states and 44881 transitions. [2023-12-21 13:33:13,023 INFO L78 Accepts]: Start accepts. Automaton has 32450 states and 44881 transitions. Word has length 85 [2023-12-21 13:33:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:13,024 INFO L495 AbstractCegarLoop]: Abstraction has 32450 states and 44881 transitions. [2023-12-21 13:33:13,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 32450 states and 44881 transitions. [2023-12-21 13:33:13,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:33:13,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:13,038 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] [2023-12-21 13:33:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:33:13,038 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:13,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:13,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1453102197, now seen corresponding path program 1 times [2023-12-21 13:33:13,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:13,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359757435] [2023-12-21 13:33:13,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:13,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:13,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359757435] [2023-12-21 13:33:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359757435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:13,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:33:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944717681] [2023-12-21 13:33:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:13,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:33:13,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:33:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:33:13,722 INFO L87 Difference]: Start difference. First operand 32450 states and 44881 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:15,320 INFO L93 Difference]: Finished difference Result 173391 states and 246846 transitions. [2023-12-21 13:33:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 13:33:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 13:33:15,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:15,657 INFO L225 Difference]: With dead ends: 173391 [2023-12-21 13:33:15,657 INFO L226 Difference]: Without dead ends: 150172 [2023-12-21 13:33:15,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:33:15,707 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 5485 mSDsluCounter, 6166 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5485 SdHoareTripleChecker+Valid, 7351 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:15,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5485 Valid, 7351 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:33:15,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150172 states. [2023-12-21 13:33:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150172 to 32318. [2023-12-21 13:33:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32318 states, 32317 states have (on average 1.3832038864993657) internal successors, (44701), 32317 states have internal predecessors, (44701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32318 states to 32318 states and 44701 transitions. [2023-12-21 13:33:16,982 INFO L78 Accepts]: Start accepts. Automaton has 32318 states and 44701 transitions. Word has length 85 [2023-12-21 13:33:16,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:16,982 INFO L495 AbstractCegarLoop]: Abstraction has 32318 states and 44701 transitions. [2023-12-21 13:33:16,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:16,982 INFO L276 IsEmpty]: Start isEmpty. Operand 32318 states and 44701 transitions. [2023-12-21 13:33:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 13:33:16,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:16,996 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] [2023-12-21 13:33:16,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:33:16,996 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:16,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash -342238671, now seen corresponding path program 1 times [2023-12-21 13:33:16,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:16,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466947868] [2023-12-21 13:33:16,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466947868] [2023-12-21 13:33:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466947868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:17,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:17,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:33:17,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25266796] [2023-12-21 13:33:17,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:17,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:33:17,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:33:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:33:17,425 INFO L87 Difference]: Start difference. First operand 32318 states and 44701 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:18,822 INFO L93 Difference]: Finished difference Result 175623 states and 249456 transitions. [2023-12-21 13:33:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 13:33:18,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 13:33:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:19,029 INFO L225 Difference]: With dead ends: 175623 [2023-12-21 13:33:19,030 INFO L226 Difference]: Without dead ends: 151843 [2023-12-21 13:33:19,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:33:19,093 INFO L413 NwaCegarLoop]: 1190 mSDtfsCounter, 7208 mSDsluCounter, 6229 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7208 SdHoareTripleChecker+Valid, 7419 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:19,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7208 Valid, 7419 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:33:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151843 states. [2023-12-21 13:33:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151843 to 31583. [2023-12-21 13:33:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31583 states, 31582 states have (on average 1.3855677284529162) internal successors, (43759), 31582 states have internal predecessors, (43759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31583 states to 31583 states and 43759 transitions. [2023-12-21 13:33:20,385 INFO L78 Accepts]: Start accepts. Automaton has 31583 states and 43759 transitions. Word has length 85 [2023-12-21 13:33:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:20,386 INFO L495 AbstractCegarLoop]: Abstraction has 31583 states and 43759 transitions. [2023-12-21 13:33:20,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:20,386 INFO L276 IsEmpty]: Start isEmpty. Operand 31583 states and 43759 transitions. [2023-12-21 13:33:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 13:33:20,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:20,399 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] [2023-12-21 13:33:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:33:20,399 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:20,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -753788722, now seen corresponding path program 1 times [2023-12-21 13:33:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168077049] [2023-12-21 13:33:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168077049] [2023-12-21 13:33:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168077049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:20,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:20,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:33:20,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729454106] [2023-12-21 13:33:20,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:20,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:33:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:33:20,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:33:20,827 INFO L87 Difference]: Start difference. First operand 31583 states and 43759 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:22,217 INFO L93 Difference]: Finished difference Result 111890 states and 158350 transitions. [2023-12-21 13:33:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:33:22,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2023-12-21 13:33:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:22,358 INFO L225 Difference]: With dead ends: 111890 [2023-12-21 13:33:22,358 INFO L226 Difference]: Without dead ends: 88245 [2023-12-21 13:33:22,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:33:22,410 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 3453 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:22,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 3067 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 13:33:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88245 states. [2023-12-21 13:33:23,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88245 to 31277. [2023-12-21 13:33:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31277 states, 31276 states have (on average 1.3855991814810078) internal successors, (43336), 31276 states have internal predecessors, (43336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:23,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31277 states to 31277 states and 43336 transitions. [2023-12-21 13:33:23,321 INFO L78 Accepts]: Start accepts. Automaton has 31277 states and 43336 transitions. Word has length 86 [2023-12-21 13:33:23,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:23,321 INFO L495 AbstractCegarLoop]: Abstraction has 31277 states and 43336 transitions. [2023-12-21 13:33:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:23,322 INFO L276 IsEmpty]: Start isEmpty. Operand 31277 states and 43336 transitions. [2023-12-21 13:33:23,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:33:23,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:23,335 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] [2023-12-21 13:33:23,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 13:33:23,335 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:23,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash -243085203, now seen corresponding path program 1 times [2023-12-21 13:33:23,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462427770] [2023-12-21 13:33:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:23,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:23,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462427770] [2023-12-21 13:33:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462427770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:23,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:23,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020283879] [2023-12-21 13:33:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:23,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:23,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:23,400 INFO L87 Difference]: Start difference. First operand 31277 states and 43336 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:23,657 INFO L93 Difference]: Finished difference Result 65139 states and 91117 transitions. [2023-12-21 13:33:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:23,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-21 13:33:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:23,708 INFO L225 Difference]: With dead ends: 65139 [2023-12-21 13:33:23,708 INFO L226 Difference]: Without dead ends: 45758 [2023-12-21 13:33:23,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:23,731 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 654 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:23,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 804 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:33:23,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45758 states. [2023-12-21 13:33:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45758 to 45648. [2023-12-21 13:33:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45648 states, 45647 states have (on average 1.4034219116261748) internal successors, (64062), 45647 states have internal predecessors, (64062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45648 states to 45648 states and 64062 transitions. [2023-12-21 13:33:24,338 INFO L78 Accepts]: Start accepts. Automaton has 45648 states and 64062 transitions. Word has length 87 [2023-12-21 13:33:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:24,338 INFO L495 AbstractCegarLoop]: Abstraction has 45648 states and 64062 transitions. [2023-12-21 13:33:24,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 45648 states and 64062 transitions. [2023-12-21 13:33:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 13:33:24,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:24,353 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] [2023-12-21 13:33:24,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:33:24,353 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:24,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash 632736010, now seen corresponding path program 1 times [2023-12-21 13:33:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190916466] [2023-12-21 13:33:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:24,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:24,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:24,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190916466] [2023-12-21 13:33:24,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190916466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:24,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:24,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158000090] [2023-12-21 13:33:24,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:24,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:24,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:24,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:24,629 INFO L87 Difference]: Start difference. First operand 45648 states and 64062 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:24,821 INFO L93 Difference]: Finished difference Result 72076 states and 101540 transitions. [2023-12-21 13:33:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:24,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2023-12-21 13:33:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:24,875 INFO L225 Difference]: With dead ends: 72076 [2023-12-21 13:33:24,875 INFO L226 Difference]: Without dead ends: 45650 [2023-12-21 13:33:24,900 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 [2023-12-21 13:33:24,901 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 316 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:24,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1490 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45650 states. [2023-12-21 13:33:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45650 to 45648. [2023-12-21 13:33:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45648 states, 45647 states have (on average 1.392774990689421) internal successors, (63576), 45647 states have internal predecessors, (63576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45648 states to 45648 states and 63576 transitions. [2023-12-21 13:33:25,502 INFO L78 Accepts]: Start accepts. Automaton has 45648 states and 63576 transitions. Word has length 87 [2023-12-21 13:33:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:25,503 INFO L495 AbstractCegarLoop]: Abstraction has 45648 states and 63576 transitions. [2023-12-21 13:33:25,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 45648 states and 63576 transitions. [2023-12-21 13:33:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:33:25,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:25,519 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] [2023-12-21 13:33:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:33:25,519 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:25,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1990993433, now seen corresponding path program 1 times [2023-12-21 13:33:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:25,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734144771] [2023-12-21 13:33:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:25,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:25,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734144771] [2023-12-21 13:33:25,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734144771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:25,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:25,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:25,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809648255] [2023-12-21 13:33:25,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:25,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:25,592 INFO L87 Difference]: Start difference. First operand 45648 states and 63576 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:25,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:25,824 INFO L93 Difference]: Finished difference Result 87405 states and 122267 transitions. [2023-12-21 13:33:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-21 13:33:25,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:26,108 INFO L225 Difference]: With dead ends: 87405 [2023-12-21 13:33:26,108 INFO L226 Difference]: Without dead ends: 58659 [2023-12-21 13:33:26,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:26,128 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 529 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:26,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 769 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58659 states. [2023-12-21 13:33:26,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58659 to 44290. [2023-12-21 13:33:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44290 states, 44289 states have (on average 1.393438551333288) internal successors, (61714), 44289 states have internal predecessors, (61714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:26,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44290 states to 44290 states and 61714 transitions. [2023-12-21 13:33:26,775 INFO L78 Accepts]: Start accepts. Automaton has 44290 states and 61714 transitions. Word has length 89 [2023-12-21 13:33:26,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:26,775 INFO L495 AbstractCegarLoop]: Abstraction has 44290 states and 61714 transitions. [2023-12-21 13:33:26,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:26,775 INFO L276 IsEmpty]: Start isEmpty. Operand 44290 states and 61714 transitions. [2023-12-21 13:33:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 13:33:26,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:26,790 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] [2023-12-21 13:33:26,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 13:33:26,790 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:26,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1643881943, now seen corresponding path program 1 times [2023-12-21 13:33:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:26,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953170981] [2023-12-21 13:33:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:27,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:27,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953170981] [2023-12-21 13:33:27,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953170981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:27,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:27,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:33:27,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768276462] [2023-12-21 13:33:27,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:27,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:33:27,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:33:27,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:33:27,241 INFO L87 Difference]: Start difference. First operand 44290 states and 61714 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:29,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:29,239 INFO L93 Difference]: Finished difference Result 198046 states and 279745 transitions. [2023-12-21 13:33:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 13:33:29,240 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-21 13:33:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:29,474 INFO L225 Difference]: With dead ends: 198046 [2023-12-21 13:33:29,474 INFO L226 Difference]: Without dead ends: 185174 [2023-12-21 13:33:29,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=251, Invalid=871, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 13:33:29,509 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 4101 mSDsluCounter, 7909 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 9001 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:29,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 9001 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:33:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185174 states. [2023-12-21 13:33:30,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185174 to 44281. [2023-12-21 13:33:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44281 states, 44280 states have (on average 1.3933152664859982) internal successors, (61696), 44280 states have internal predecessors, (61696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44281 states to 44281 states and 61696 transitions. [2023-12-21 13:33:30,817 INFO L78 Accepts]: Start accepts. Automaton has 44281 states and 61696 transitions. Word has length 89 [2023-12-21 13:33:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:30,817 INFO L495 AbstractCegarLoop]: Abstraction has 44281 states and 61696 transitions. [2023-12-21 13:33:30,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 44281 states and 61696 transitions. [2023-12-21 13:33:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:33:30,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:30,855 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] [2023-12-21 13:33:30,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:33:30,856 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:30,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash 101003639, now seen corresponding path program 1 times [2023-12-21 13:33:30,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:30,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978953649] [2023-12-21 13:33:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:30,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978953649] [2023-12-21 13:33:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978953649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:31,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:31,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:33:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604137743] [2023-12-21 13:33:31,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:31,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:33:31,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:33:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:33:31,107 INFO L87 Difference]: Start difference. First operand 44281 states and 61696 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:31,954 INFO L93 Difference]: Finished difference Result 243769 states and 346798 transitions. [2023-12-21 13:33:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:33:31,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-12-21 13:33:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:32,297 INFO L225 Difference]: With dead ends: 243769 [2023-12-21 13:33:32,297 INFO L226 Difference]: Without dead ends: 206444 [2023-12-21 13:33:32,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:33:32,370 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 3596 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3596 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:32,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3596 Valid, 2400 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:33:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206444 states. [2023-12-21 13:33:34,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206444 to 81604. [2023-12-21 13:33:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81604 states, 81603 states have (on average 1.396505030452312) internal successors, (113959), 81603 states have internal predecessors, (113959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81604 states to 81604 states and 113959 transitions. [2023-12-21 13:33:34,191 INFO L78 Accepts]: Start accepts. Automaton has 81604 states and 113959 transitions. Word has length 105 [2023-12-21 13:33:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:34,191 INFO L495 AbstractCegarLoop]: Abstraction has 81604 states and 113959 transitions. [2023-12-21 13:33:34,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand 81604 states and 113959 transitions. [2023-12-21 13:33:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:33:34,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:34,258 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] [2023-12-21 13:33:34,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 13:33:34,258 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:34,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1881492410, now seen corresponding path program 1 times [2023-12-21 13:33:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:34,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059041718] [2023-12-21 13:33:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:34,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059041718] [2023-12-21 13:33:34,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059041718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:34,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:33:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504193772] [2023-12-21 13:33:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:34,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:33:34,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:33:34,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:33:34,418 INFO L87 Difference]: Start difference. First operand 81604 states and 113959 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:35,244 INFO L93 Difference]: Finished difference Result 142498 states and 198708 transitions. [2023-12-21 13:33:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:33:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-21 13:33:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:35,358 INFO L225 Difference]: With dead ends: 142498 [2023-12-21 13:33:35,359 INFO L226 Difference]: Without dead ends: 97533 [2023-12-21 13:33:35,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:33:35,409 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 1724 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:35,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 2466 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:33:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97533 states. [2023-12-21 13:33:36,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97533 to 75397. [2023-12-21 13:33:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75397 states, 75396 states have (on average 1.3815852299856757) internal successors, (104166), 75396 states have internal predecessors, (104166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75397 states to 75397 states and 104166 transitions. [2023-12-21 13:33:36,569 INFO L78 Accepts]: Start accepts. Automaton has 75397 states and 104166 transitions. Word has length 106 [2023-12-21 13:33:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:36,569 INFO L495 AbstractCegarLoop]: Abstraction has 75397 states and 104166 transitions. [2023-12-21 13:33:36,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:36,570 INFO L276 IsEmpty]: Start isEmpty. Operand 75397 states and 104166 transitions. [2023-12-21 13:33:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-21 13:33:36,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:36,647 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] [2023-12-21 13:33:36,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 13:33:36,647 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:36,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1580201197, now seen corresponding path program 1 times [2023-12-21 13:33:36,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:36,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886195450] [2023-12-21 13:33:36,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:36,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:36,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886195450] [2023-12-21 13:33:36,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886195450] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:36,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:36,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:36,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617174330] [2023-12-21 13:33:36,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:36,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:36,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:36,778 INFO L87 Difference]: Start difference. First operand 75397 states and 104166 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:37,608 INFO L93 Difference]: Finished difference Result 208823 states and 289858 transitions. [2023-12-21 13:33:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:37,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-12-21 13:33:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:37,791 INFO L225 Difference]: With dead ends: 208823 [2023-12-21 13:33:37,791 INFO L226 Difference]: Without dead ends: 140115 [2023-12-21 13:33:37,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:37,854 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 199 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:37,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1212 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140115 states. [2023-12-21 13:33:39,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140115 to 133197. [2023-12-21 13:33:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133197 states, 133196 states have (on average 1.374260488302952) internal successors, (183046), 133196 states have internal predecessors, (183046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133197 states to 133197 states and 183046 transitions. [2023-12-21 13:33:39,750 INFO L78 Accepts]: Start accepts. Automaton has 133197 states and 183046 transitions. Word has length 107 [2023-12-21 13:33:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:39,750 INFO L495 AbstractCegarLoop]: Abstraction has 133197 states and 183046 transitions. [2023-12-21 13:33:39,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 133197 states and 183046 transitions. [2023-12-21 13:33:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:33:39,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:39,798 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] [2023-12-21 13:33:39,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 13:33:39,798 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:39,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1628331341, now seen corresponding path program 1 times [2023-12-21 13:33:39,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:39,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485977632] [2023-12-21 13:33:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:39,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:39,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485977632] [2023-12-21 13:33:39,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485977632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:39,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:39,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:39,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102551494] [2023-12-21 13:33:39,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:39,871 INFO L87 Difference]: Start difference. First operand 133197 states and 183046 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:40,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:40,570 INFO L93 Difference]: Finished difference Result 190346 states and 261423 transitions. [2023-12-21 13:33:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:40,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-21 13:33:40,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:40,732 INFO L225 Difference]: With dead ends: 190346 [2023-12-21 13:33:40,732 INFO L226 Difference]: Without dead ends: 126447 [2023-12-21 13:33:40,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:40,798 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 341 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:40,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 1314 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126447 states. [2023-12-21 13:33:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126447 to 126445. [2023-12-21 13:33:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126445 states, 126444 states have (on average 1.366597070639967) internal successors, (172798), 126444 states have internal predecessors, (172798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126445 states to 126445 states and 172798 transitions. [2023-12-21 13:33:42,658 INFO L78 Accepts]: Start accepts. Automaton has 126445 states and 172798 transitions. Word has length 108 [2023-12-21 13:33:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:42,658 INFO L495 AbstractCegarLoop]: Abstraction has 126445 states and 172798 transitions. [2023-12-21 13:33:42,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 126445 states and 172798 transitions. [2023-12-21 13:33:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 13:33:42,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:42,708 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] [2023-12-21 13:33:42,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 13:33:42,725 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:42,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:42,725 INFO L85 PathProgramCache]: Analyzing trace with hash -554241040, now seen corresponding path program 1 times [2023-12-21 13:33:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:42,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980140310] [2023-12-21 13:33:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:42,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:42,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980140310] [2023-12-21 13:33:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980140310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:42,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:42,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:42,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829073268] [2023-12-21 13:33:42,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:42,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:42,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:42,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:42,844 INFO L87 Difference]: Start difference. First operand 126445 states and 172798 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:44,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:44,273 INFO L93 Difference]: Finished difference Result 359525 states and 492164 transitions. [2023-12-21 13:33:44,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:44,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2023-12-21 13:33:44,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:44,680 INFO L225 Difference]: With dead ends: 359525 [2023-12-21 13:33:44,680 INFO L226 Difference]: Without dead ends: 239705 [2023-12-21 13:33:44,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:44,720 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 187 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:44,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1201 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239705 states. [2023-12-21 13:33:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239705 to 226327. [2023-12-21 13:33:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226327 states, 226326 states have (on average 1.3573341109726678) internal successors, (307200), 226326 states have internal predecessors, (307200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226327 states to 226327 states and 307200 transitions. [2023-12-21 13:33:48,285 INFO L78 Accepts]: Start accepts. Automaton has 226327 states and 307200 transitions. Word has length 108 [2023-12-21 13:33:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:48,285 INFO L495 AbstractCegarLoop]: Abstraction has 226327 states and 307200 transitions. [2023-12-21 13:33:48,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 226327 states and 307200 transitions. [2023-12-21 13:33:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:33:48,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:48,323 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] [2023-12-21 13:33:48,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 13:33:48,323 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:48,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash -164719415, now seen corresponding path program 1 times [2023-12-21 13:33:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:48,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131583096] [2023-12-21 13:33:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:48,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:48,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131583096] [2023-12-21 13:33:48,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131583096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:48,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:48,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996697869] [2023-12-21 13:33:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:48,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:48,471 INFO L87 Difference]: Start difference. First operand 226327 states and 307200 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:49,602 INFO L93 Difference]: Finished difference Result 338237 states and 459079 transitions. [2023-12-21 13:33:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:49,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 13:33:49,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:50,094 INFO L225 Difference]: With dead ends: 338237 [2023-12-21 13:33:50,095 INFO L226 Difference]: Without dead ends: 201689 [2023-12-21 13:33:50,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:50,296 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 332 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:50,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1308 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201689 states. [2023-12-21 13:33:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201689 to 201687. [2023-12-21 13:33:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201687 states, 201686 states have (on average 1.3519530359073015) internal successors, (272670), 201686 states have internal predecessors, (272670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201687 states to 201687 states and 272670 transitions. [2023-12-21 13:33:53,271 INFO L78 Accepts]: Start accepts. Automaton has 201687 states and 272670 transitions. Word has length 109 [2023-12-21 13:33:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:53,272 INFO L495 AbstractCegarLoop]: Abstraction has 201687 states and 272670 transitions. [2023-12-21 13:33:53,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:53,272 INFO L276 IsEmpty]: Start isEmpty. Operand 201687 states and 272670 transitions. [2023-12-21 13:33:53,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:33:53,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:53,314 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] [2023-12-21 13:33:53,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 13:33:53,314 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:53,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1230159355, now seen corresponding path program 1 times [2023-12-21 13:33:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:53,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769667791] [2023-12-21 13:33:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:53,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:53,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:33:53,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769667791] [2023-12-21 13:33:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769667791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:53,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301579737] [2023-12-21 13:33:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:53,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:53,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:53,541 INFO L87 Difference]: Start difference. First operand 201687 states and 272670 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:55,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:55,547 INFO L93 Difference]: Finished difference Result 581187 states and 785640 transitions. [2023-12-21 13:33:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:55,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-21 13:33:55,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:56,866 INFO L225 Difference]: With dead ends: 581187 [2023-12-21 13:33:56,866 INFO L226 Difference]: Without dead ends: 385997 [2023-12-21 13:33:56,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:56,967 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 174 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:56,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1187 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:57,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385997 states. [2023-12-21 13:34:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385997 to 362443. [2023-12-21 13:34:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362443 states, 362442 states have (on average 1.3390997732050922) internal successors, (485346), 362442 states have internal predecessors, (485346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362443 states to 362443 states and 485346 transitions. [2023-12-21 13:34:02,126 INFO L78 Accepts]: Start accepts. Automaton has 362443 states and 485346 transitions. Word has length 109 [2023-12-21 13:34:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:02,126 INFO L495 AbstractCegarLoop]: Abstraction has 362443 states and 485346 transitions. [2023-12-21 13:34:02,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:02,127 INFO L276 IsEmpty]: Start isEmpty. Operand 362443 states and 485346 transitions. [2023-12-21 13:34:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:34:02,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:02,157 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] [2023-12-21 13:34:02,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 13:34:02,157 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:02,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:02,157 INFO L85 PathProgramCache]: Analyzing trace with hash -777860031, now seen corresponding path program 1 times [2023-12-21 13:34:02,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:02,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880014275] [2023-12-21 13:34:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:02,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:02,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880014275] [2023-12-21 13:34:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880014275] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:02,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:02,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:02,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307990251] [2023-12-21 13:34:02,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:02,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:02,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:02,290 INFO L87 Difference]: Start difference. First operand 362443 states and 485346 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:04,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:04,161 INFO L93 Difference]: Finished difference Result 468896 states and 628197 transitions. [2023-12-21 13:34:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:04,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-21 13:34:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:04,604 INFO L225 Difference]: With dead ends: 468896 [2023-12-21 13:34:04,605 INFO L226 Difference]: Without dead ends: 257625 [2023-12-21 13:34:04,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:04,688 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 315 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:04,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1278 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257625 states. [2023-12-21 13:34:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257625 to 257623. [2023-12-21 13:34:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257623 states, 257622 states have (on average 1.3365939244319196) internal successors, (344336), 257622 states have internal predecessors, (344336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257623 states to 257623 states and 344336 transitions. [2023-12-21 13:34:08,857 INFO L78 Accepts]: Start accepts. Automaton has 257623 states and 344336 transitions. Word has length 110 [2023-12-21 13:34:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:08,859 INFO L495 AbstractCegarLoop]: Abstraction has 257623 states and 344336 transitions. [2023-12-21 13:34:08,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 257623 states and 344336 transitions. [2023-12-21 13:34:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:34:08,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:08,889 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] [2023-12-21 13:34:08,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 13:34:08,904 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:08,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 770038304, now seen corresponding path program 1 times [2023-12-21 13:34:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:08,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38934846] [2023-12-21 13:34:08,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:09,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:09,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38934846] [2023-12-21 13:34:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38934846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:09,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:09,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:09,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305505571] [2023-12-21 13:34:09,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:09,126 INFO L87 Difference]: Start difference. First operand 257623 states and 344336 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:12,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:12,492 INFO L93 Difference]: Finished difference Result 744427 states and 994210 transitions. [2023-12-21 13:34:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2023-12-21 13:34:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:13,669 INFO L225 Difference]: With dead ends: 744427 [2023-12-21 13:34:13,673 INFO L226 Difference]: Without dead ends: 493025 [2023-12-21 13:34:13,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:13,847 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 154 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:13,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1173 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:14,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493025 states. [2023-12-21 13:34:20,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493025 to 467935. [2023-12-21 13:34:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467935 states, 467934 states have (on average 1.3277598977633598) internal successors, (621304), 467934 states have internal predecessors, (621304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467935 states to 467935 states and 621304 transitions. [2023-12-21 13:34:22,789 INFO L78 Accepts]: Start accepts. Automaton has 467935 states and 621304 transitions. Word has length 110 [2023-12-21 13:34:22,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:22,790 INFO L495 AbstractCegarLoop]: Abstraction has 467935 states and 621304 transitions. [2023-12-21 13:34:22,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:22,790 INFO L276 IsEmpty]: Start isEmpty. Operand 467935 states and 621304 transitions. [2023-12-21 13:34:22,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-21 13:34:22,814 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:22,814 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] [2023-12-21 13:34:22,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 13:34:22,815 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:22,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2096934117, now seen corresponding path program 1 times [2023-12-21 13:34:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125642996] [2023-12-21 13:34:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:23,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:23,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125642996] [2023-12-21 13:34:23,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125642996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:23,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:23,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:23,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376513838] [2023-12-21 13:34:23,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:23,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:23,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:23,033 INFO L87 Difference]: Start difference. First operand 467935 states and 621304 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:27,795 INFO L93 Difference]: Finished difference Result 1359363 states and 1800986 transitions. [2023-12-21 13:34:27,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:27,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-21 13:34:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:30,860 INFO L225 Difference]: With dead ends: 1359363 [2023-12-21 13:34:30,860 INFO L226 Difference]: Without dead ends: 897649 [2023-12-21 13:34:31,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:31,489 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 130 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:31,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1150 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897649 states. [2023-12-21 13:34:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897649 to 847471. [2023-12-21 13:34:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847471 states, 847470 states have (on average 1.3159262274770789) internal successors, (1115208), 847470 states have internal predecessors, (1115208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847471 states to 847471 states and 1115208 transitions. [2023-12-21 13:34:45,582 INFO L78 Accepts]: Start accepts. Automaton has 847471 states and 1115208 transitions. Word has length 112 [2023-12-21 13:34:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:45,582 INFO L495 AbstractCegarLoop]: Abstraction has 847471 states and 1115208 transitions. [2023-12-21 13:34:45,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 847471 states and 1115208 transitions. [2023-12-21 13:34:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-21 13:34:45,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:45,604 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] [2023-12-21 13:34:45,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 13:34:45,604 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:45,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1890892001, now seen corresponding path program 1 times [2023-12-21 13:34:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504361106] [2023-12-21 13:34:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:45,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:45,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:45,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504361106] [2023-12-21 13:34:45,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504361106] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:45,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:45,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:34:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544294650] [2023-12-21 13:34:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:45,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:34:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:34:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:34:45,787 INFO L87 Difference]: Start difference. First operand 847471 states and 1115208 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:53,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:53,113 INFO L93 Difference]: Finished difference Result 1785740 states and 2324640 transitions. [2023-12-21 13:34:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:34:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2023-12-21 13:34:53,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:57,294 INFO L225 Difference]: With dead ends: 1785740 [2023-12-21 13:34:57,294 INFO L226 Difference]: Without dead ends: 1785738 [2023-12-21 13:34:57,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:34:57,595 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 568 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:57,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 2926 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:34:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785738 states.