/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:02:59,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:02:59,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 01:02:59,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:02:59,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:02:59,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:02:59,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:02:59,919 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:02:59,919 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:02:59,922 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:02:59,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:02:59,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:02:59,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:02:59,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:02:59,925 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:02:59,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:02:59,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:02:59,925 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:02:59,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:02:59,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:02:59,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:02:59,926 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:02:59,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:02:59,926 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:02:59,926 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:02:59,926 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:02:59,927 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:02:59,927 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:02:59,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:02:59,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:02:59,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:02:59,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:02:59,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:02:59,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:02:59,929 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:02:59,929 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:02:59,929 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:02:59,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:02:59,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:02:59,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:02:59,930 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:02:59,930 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:02:59,930 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:02:59,930 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:03:00,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:03:00,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:03:00,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:03:00,144 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:03:00,144 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:03:00,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2023-12-20 01:03:01,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:03:01,340 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:03:01,340 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2023-12-20 01:03:01,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c532de2bb/b1e60bf1bb7443f4aaac56a3caeb6af8/FLAG01b2f50b8 [2023-12-20 01:03:01,758 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c532de2bb/b1e60bf1bb7443f4aaac56a3caeb6af8 [2023-12-20 01:03:01,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:03:01,761 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:03:01,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:03:01,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:03:01,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:03:01,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:03:01" (1/1) ... [2023-12-20 01:03:01,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f88d79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:01, skipping insertion in model container [2023-12-20 01:03:01,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:03:01" (1/1) ... [2023-12-20 01:03:01,811 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:03:02,007 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2023-12-20 01:03:02,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:03:02,022 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:03:02,074 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c[9280,9293] [2023-12-20 01:03:02,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:03:02,089 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:03:02,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02 WrapperNode [2023-12-20 01:03:02,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:03:02,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:03:02,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:03:02,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:03:02,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,143 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 305 [2023-12-20 01:03:02,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:03:02,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:03:02,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:03:02,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:03:02,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,171 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 01:03:02,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,189 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:03:02,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:03:02,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:03:02,197 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:03:02,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (1/1) ... [2023-12-20 01:03:02,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:03:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:02,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 01:03:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:03:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:03:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:03:02,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:03:02,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 01:03:02,365 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:03:02,366 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:03:02,691 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:03:02,731 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:03:02,731 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:03:02,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:03:02 BoogieIcfgContainer [2023-12-20 01:03:02,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:03:02,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:03:02,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:03:02,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:03:02,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:03:01" (1/3) ... [2023-12-20 01:03:02,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dac2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:03:02, skipping insertion in model container [2023-12-20 01:03:02,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:02" (2/3) ... [2023-12-20 01:03:02,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dac2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:03:02, skipping insertion in model container [2023-12-20 01:03:02,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:03:02" (3/3) ... [2023-12-20 01:03:02,737 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c [2023-12-20 01:03:02,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:03:02,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:03:02,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:03:02,793 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;@e49c2c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:03:02,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:03:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 76 states have (on average 1.7763157894736843) internal successors, (135), 77 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:03:02,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:02,803 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] [2023-12-20 01:03:02,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:02,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1762021428, now seen corresponding path program 1 times [2023-12-20 01:03:02,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:02,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992853787] [2023-12-20 01:03:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:02,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:02,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:02,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992853787] [2023-12-20 01:03:02,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992853787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:02,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:02,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:03:02,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112680251] [2023-12-20 01:03:03,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:03:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:03,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:03:03,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:03:03,042 INFO L87 Difference]: Start difference. First operand has 78 states, 76 states have (on average 1.7763157894736843) internal successors, (135), 77 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:03,084 INFO L93 Difference]: Finished difference Result 129 states and 218 transitions. [2023-12-20 01:03:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:03:03,087 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-20 01:03:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:03,095 INFO L225 Difference]: With dead ends: 129 [2023-12-20 01:03:03,096 INFO L226 Difference]: Without dead ends: 76 [2023-12-20 01:03:03,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:03:03,103 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:03,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:03,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-20 01:03:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-20 01:03:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.7333333333333334) internal successors, (130), 75 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 130 transitions. [2023-12-20 01:03:03,143 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 130 transitions. Word has length 26 [2023-12-20 01:03:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 130 transitions. [2023-12-20 01:03:03,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 130 transitions. [2023-12-20 01:03:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:03:03,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:03,146 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] [2023-12-20 01:03:03,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:03:03,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:03,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -43416906, now seen corresponding path program 1 times [2023-12-20 01:03:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:03,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139023157] [2023-12-20 01:03:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:03,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:03,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:03,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139023157] [2023-12-20 01:03:03,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139023157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:03,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:03,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:03:03,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030366662] [2023-12-20 01:03:03,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:03,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:03:03,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:03:03,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:03:03,355 INFO L87 Difference]: Start difference. First operand 76 states and 130 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:03,429 INFO L93 Difference]: Finished difference Result 175 states and 289 transitions. [2023-12-20 01:03:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:03:03,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-20 01:03:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:03,430 INFO L225 Difference]: With dead ends: 175 [2023-12-20 01:03:03,430 INFO L226 Difference]: Without dead ends: 124 [2023-12-20 01:03:03,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:03:03,432 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 77 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:03,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 348 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:03:03,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-20 01:03:03,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 76. [2023-12-20 01:03:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 75 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) [2023-12-20 01:03:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2023-12-20 01:03:03,437 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 26 [2023-12-20 01:03:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:03,437 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2023-12-20 01:03:03,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2023-12-20 01:03:03,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:03:03,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:03,439 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] [2023-12-20 01:03:03,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:03:03,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:03,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash -836453865, now seen corresponding path program 1 times [2023-12-20 01:03:03,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:03,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145803979] [2023-12-20 01:03:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:03,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:03,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145803979] [2023-12-20 01:03:03,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145803979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:03,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:03,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:03,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645313245] [2023-12-20 01:03:03,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:03,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:03,622 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:03,720 INFO L93 Difference]: Finished difference Result 316 states and 496 transitions. [2023-12-20 01:03:03,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:03,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-20 01:03:03,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:03,727 INFO L225 Difference]: With dead ends: 316 [2023-12-20 01:03:03,727 INFO L226 Difference]: Without dead ends: 268 [2023-12-20 01:03:03,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:03:03,731 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 715 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:03,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 507 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:03,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2023-12-20 01:03:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 122. [2023-12-20 01:03:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.4958677685950412) internal successors, (181), 121 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 181 transitions. [2023-12-20 01:03:03,748 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 181 transitions. Word has length 49 [2023-12-20 01:03:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:03,753 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 181 transitions. [2023-12-20 01:03:03,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 181 transitions. [2023-12-20 01:03:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 01:03:03,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:03,755 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] [2023-12-20 01:03:03,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:03:03,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:03,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:03,755 INFO L85 PathProgramCache]: Analyzing trace with hash -173296900, now seen corresponding path program 1 times [2023-12-20 01:03:03,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:03,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522530114] [2023-12-20 01:03:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:03,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:03,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:03,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522530114] [2023-12-20 01:03:03,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522530114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:03,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:03,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:03,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648074182] [2023-12-20 01:03:03,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:03,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:03,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:03,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:03,984 INFO L87 Difference]: Start difference. First operand 122 states and 181 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,009 INFO L93 Difference]: Finished difference Result 130 states and 190 transitions. [2023-12-20 01:03:04,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 01:03:04,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,010 INFO L225 Difference]: With dead ends: 130 [2023-12-20 01:03:04,010 INFO L226 Difference]: Without dead ends: 128 [2023-12-20 01:03:04,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:04,016 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 2 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 494 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-20 01:03:04,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2023-12-20 01:03:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.48) internal successors, (185), 125 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 185 transitions. [2023-12-20 01:03:04,031 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 185 transitions. Word has length 50 [2023-12-20 01:03:04,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,031 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 185 transitions. [2023-12-20 01:03:04,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 185 transitions. [2023-12-20 01:03:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 01:03:04,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,036 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] [2023-12-20 01:03:04,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:03:04,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1076206113, now seen corresponding path program 1 times [2023-12-20 01:03:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421821232] [2023-12-20 01:03:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421821232] [2023-12-20 01:03:04,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421821232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883201784] [2023-12-20 01:03:04,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,100 INFO L87 Difference]: Start difference. First operand 126 states and 185 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,112 INFO L93 Difference]: Finished difference Result 308 states and 475 transitions. [2023-12-20 01:03:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 01:03:04,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,114 INFO L225 Difference]: With dead ends: 308 [2023-12-20 01:03:04,114 INFO L226 Difference]: Without dead ends: 210 [2023-12-20 01:03:04,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,116 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 47 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 177 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-20 01:03:04,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2023-12-20 01:03:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5217391304347827) internal successors, (315), 207 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 315 transitions. [2023-12-20 01:03:04,126 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 315 transitions. Word has length 51 [2023-12-20 01:03:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,127 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 315 transitions. [2023-12-20 01:03:04,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 315 transitions. [2023-12-20 01:03:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 01:03:04,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,129 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] [2023-12-20 01:03:04,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:03:04,129 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1721355813, now seen corresponding path program 1 times [2023-12-20 01:03:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994285799] [2023-12-20 01:03:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994285799] [2023-12-20 01:03:04,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994285799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131433505] [2023-12-20 01:03:04,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,172 INFO L87 Difference]: Start difference. First operand 208 states and 315 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,187 INFO L93 Difference]: Finished difference Result 392 states and 608 transitions. [2023-12-20 01:03:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 01:03:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,189 INFO L225 Difference]: With dead ends: 392 [2023-12-20 01:03:04,189 INFO L226 Difference]: Without dead ends: 294 [2023-12-20 01:03:04,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,191 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 66 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 237 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-20 01:03:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2023-12-20 01:03:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.5360824742268042) internal successors, (447), 291 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 447 transitions. [2023-12-20 01:03:04,207 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 447 transitions. Word has length 51 [2023-12-20 01:03:04,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,208 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 447 transitions. [2023-12-20 01:03:04,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 447 transitions. [2023-12-20 01:03:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:03:04,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,209 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] [2023-12-20 01:03:04,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:03:04,209 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 963324867, now seen corresponding path program 1 times [2023-12-20 01:03:04,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637981367] [2023-12-20 01:03:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637981367] [2023-12-20 01:03:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637981367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405399307] [2023-12-20 01:03:04,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,263 INFO L87 Difference]: Start difference. First operand 292 states and 447 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,283 INFO L93 Difference]: Finished difference Result 768 states and 1197 transitions. [2023-12-20 01:03:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 01:03:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,285 INFO L225 Difference]: With dead ends: 768 [2023-12-20 01:03:04,285 INFO L226 Difference]: Without dead ends: 506 [2023-12-20 01:03:04,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,287 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-12-20 01:03:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 504. [2023-12-20 01:03:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.536779324055666) internal successors, (773), 503 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 773 transitions. [2023-12-20 01:03:04,300 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 773 transitions. Word has length 52 [2023-12-20 01:03:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,300 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 773 transitions. [2023-12-20 01:03:04,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 773 transitions. [2023-12-20 01:03:04,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:03:04,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,301 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] [2023-12-20 01:03:04,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:03:04,301 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash 489596131, now seen corresponding path program 1 times [2023-12-20 01:03:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282071699] [2023-12-20 01:03:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282071699] [2023-12-20 01:03:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282071699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010456010] [2023-12-20 01:03:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,350 INFO L87 Difference]: Start difference. First operand 504 states and 773 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,376 INFO L93 Difference]: Finished difference Result 1356 states and 2091 transitions. [2023-12-20 01:03:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 01:03:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,380 INFO L225 Difference]: With dead ends: 1356 [2023-12-20 01:03:04,380 INFO L226 Difference]: Without dead ends: 882 [2023-12-20 01:03:04,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,382 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 58 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 222 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-12-20 01:03:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 880. [2023-12-20 01:03:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.5187713310580204) internal successors, (1335), 879 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1335 transitions. [2023-12-20 01:03:04,440 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1335 transitions. Word has length 52 [2023-12-20 01:03:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,441 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1335 transitions. [2023-12-20 01:03:04,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1335 transitions. [2023-12-20 01:03:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:03:04,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:04,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:03:04,442 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 307269123, now seen corresponding path program 1 times [2023-12-20 01:03:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365392399] [2023-12-20 01:03:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365392399] [2023-12-20 01:03:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365392399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265009300] [2023-12-20 01:03:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,479 INFO L87 Difference]: Start difference. First operand 880 states and 1335 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,510 INFO L93 Difference]: Finished difference Result 2388 states and 3609 transitions. [2023-12-20 01:03:04,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 01:03:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,515 INFO L225 Difference]: With dead ends: 2388 [2023-12-20 01:03:04,515 INFO L226 Difference]: Without dead ends: 1538 [2023-12-20 01:03:04,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,518 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 62 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 235 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-12-20 01:03:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1536. [2023-12-20 01:03:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 1.4846905537459283) internal successors, (2279), 1535 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2279 transitions. [2023-12-20 01:03:04,549 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2279 transitions. Word has length 52 [2023-12-20 01:03:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,549 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2279 transitions. [2023-12-20 01:03:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2279 transitions. [2023-12-20 01:03:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:03:04,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:04,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:03:04,550 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1749415936, now seen corresponding path program 1 times [2023-12-20 01:03:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926499347] [2023-12-20 01:03:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926499347] [2023-12-20 01:03:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926499347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288148574] [2023-12-20 01:03:04,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,630 INFO L87 Difference]: Start difference. First operand 1536 states and 2279 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,661 INFO L93 Difference]: Finished difference Result 3044 states and 4529 transitions. [2023-12-20 01:03:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-20 01:03:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,665 INFO L225 Difference]: With dead ends: 3044 [2023-12-20 01:03:04,665 INFO L226 Difference]: Without dead ends: 1538 [2023-12-20 01:03:04,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,667 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 52 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 224 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-12-20 01:03:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1536. [2023-12-20 01:03:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 1.4690553745928339) internal successors, (2255), 1535 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2255 transitions. [2023-12-20 01:03:04,697 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2255 transitions. Word has length 73 [2023-12-20 01:03:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,697 INFO L495 AbstractCegarLoop]: Abstraction has 1536 states and 2255 transitions. [2023-12-20 01:03:04,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2255 transitions. [2023-12-20 01:03:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:03:04,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:04,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:03:04,699 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash -422196063, now seen corresponding path program 1 times [2023-12-20 01:03:04,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284219153] [2023-12-20 01:03:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284219153] [2023-12-20 01:03:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284219153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554660592] [2023-12-20 01:03:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,778 INFO L87 Difference]: Start difference. First operand 1536 states and 2255 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,802 INFO L93 Difference]: Finished difference Result 2292 states and 3369 transitions. [2023-12-20 01:03:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-20 01:03:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,805 INFO L225 Difference]: With dead ends: 2292 [2023-12-20 01:03:04,805 INFO L226 Difference]: Without dead ends: 786 [2023-12-20 01:03:04,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,807 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 46 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 205 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-20 01:03:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 784. [2023-12-20 01:03:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.4444444444444444) internal successors, (1131), 783 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1131 transitions. [2023-12-20 01:03:04,824 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1131 transitions. Word has length 73 [2023-12-20 01:03:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,824 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1131 transitions. [2023-12-20 01:03:04,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1131 transitions. [2023-12-20 01:03:04,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:03:04,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:04,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 01:03:04,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,828 INFO L85 PathProgramCache]: Analyzing trace with hash 84089282, now seen corresponding path program 1 times [2023-12-20 01:03:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671004227] [2023-12-20 01:03:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:04,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671004227] [2023-12-20 01:03:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671004227] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:04,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:04,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:04,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91186516] [2023-12-20 01:03:04,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:04,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,903 INFO L87 Difference]: Start difference. First operand 784 states and 1131 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:04,920 INFO L93 Difference]: Finished difference Result 1164 states and 1683 transitions. [2023-12-20 01:03:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:04,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-20 01:03:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:04,922 INFO L225 Difference]: With dead ends: 1164 [2023-12-20 01:03:04,922 INFO L226 Difference]: Without dead ends: 410 [2023-12-20 01:03:04,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:04,925 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 40 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:04,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 186 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-20 01:03:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 408. [2023-12-20 01:03:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.4127764127764129) internal successors, (575), 407 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 575 transitions. [2023-12-20 01:03:04,935 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 575 transitions. Word has length 73 [2023-12-20 01:03:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:04,935 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 575 transitions. [2023-12-20 01:03:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:04,935 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 575 transitions. [2023-12-20 01:03:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:03:04,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:04,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:04,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:03:04,936 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:04,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2036211555, now seen corresponding path program 1 times [2023-12-20 01:03:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:04,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554981406] [2023-12-20 01:03:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:06,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554981406] [2023-12-20 01:03:06,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554981406] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163938990] [2023-12-20 01:03:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:06,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:06,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:06,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:06,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 01:03:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:06,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 01:03:06,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:03:06,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:03:07,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163938990] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:07,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:07,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 21 [2023-12-20 01:03:07,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474318695] [2023-12-20 01:03:07,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:07,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 01:03:07,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 01:03:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-20 01:03:07,020 INFO L87 Difference]: Start difference. First operand 408 states and 575 transitions. Second operand has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:09,665 INFO L93 Difference]: Finished difference Result 3452 states and 4862 transitions. [2023-12-20 01:03:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-20 01:03:09,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-20 01:03:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:09,673 INFO L225 Difference]: With dead ends: 3452 [2023-12-20 01:03:09,674 INFO L226 Difference]: Without dead ends: 3190 [2023-12-20 01:03:09,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1219, Invalid=5921, Unknown=0, NotChecked=0, Total=7140 [2023-12-20 01:03:09,676 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 3389 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3389 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:09,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3389 Valid, 1474 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 01:03:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2023-12-20 01:03:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 2568. [2023-12-20 01:03:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2568 states, 2567 states have (on average 1.4191663420335021) internal successors, (3643), 2567 states have internal predecessors, (3643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3643 transitions. [2023-12-20 01:03:09,734 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3643 transitions. Word has length 73 [2023-12-20 01:03:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:09,734 INFO L495 AbstractCegarLoop]: Abstraction has 2568 states and 3643 transitions. [2023-12-20 01:03:09,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.904761904761905) internal successors, (208), 21 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:09,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3643 transitions. [2023-12-20 01:03:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:09,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:09,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:09,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:09,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 01:03:09,941 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:09,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -770988096, now seen corresponding path program 1 times [2023-12-20 01:03:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:09,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269057372] [2023-12-20 01:03:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:09,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 01:03:10,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:10,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269057372] [2023-12-20 01:03:10,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269057372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:10,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:10,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:10,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437290513] [2023-12-20 01:03:10,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:10,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:10,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:10,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:10,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:10,018 INFO L87 Difference]: Start difference. First operand 2568 states and 3643 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:10,127 INFO L93 Difference]: Finished difference Result 7575 states and 10847 transitions. [2023-12-20 01:03:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 01:03:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:10,145 INFO L225 Difference]: With dead ends: 7575 [2023-12-20 01:03:10,145 INFO L226 Difference]: Without dead ends: 6264 [2023-12-20 01:03:10,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:03:10,149 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 498 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:10,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 550 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:10,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6264 states. [2023-12-20 01:03:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6264 to 3813. [2023-12-20 01:03:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3813 states, 3812 states have (on average 1.4150052465897167) internal successors, (5394), 3812 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 5394 transitions. [2023-12-20 01:03:10,252 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 5394 transitions. Word has length 74 [2023-12-20 01:03:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:10,252 INFO L495 AbstractCegarLoop]: Abstraction has 3813 states and 5394 transitions. [2023-12-20 01:03:10,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 5394 transitions. [2023-12-20 01:03:10,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:10,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:10,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:10,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:03:10,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:10,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:10,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1097547964, now seen corresponding path program 1 times [2023-12-20 01:03:10,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:10,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477300885] [2023-12-20 01:03:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:10,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 01:03:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477300885] [2023-12-20 01:03:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477300885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:10,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716730149] [2023-12-20 01:03:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:10,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:10,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:10,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:10,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:10,334 INFO L87 Difference]: Start difference. First operand 3813 states and 5394 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:10,466 INFO L93 Difference]: Finished difference Result 8820 states and 12598 transitions. [2023-12-20 01:03:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:10,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 01:03:10,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:10,487 INFO L225 Difference]: With dead ends: 8820 [2023-12-20 01:03:10,487 INFO L226 Difference]: Without dead ends: 7509 [2023-12-20 01:03:10,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:03:10,493 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 492 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:10,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 577 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:10,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2023-12-20 01:03:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 5058. [2023-12-20 01:03:10,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 5057 states have (on average 1.4128930195768241) internal successors, (7145), 5057 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 7145 transitions. [2023-12-20 01:03:10,677 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 7145 transitions. Word has length 74 [2023-12-20 01:03:10,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:10,677 INFO L495 AbstractCegarLoop]: Abstraction has 5058 states and 7145 transitions. [2023-12-20 01:03:10,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 7145 transitions. [2023-12-20 01:03:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:10,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:10,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:10,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:03:10,678 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:10,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1722047678, now seen corresponding path program 1 times [2023-12-20 01:03:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:10,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871308913] [2023-12-20 01:03:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 01:03:10,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:10,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871308913] [2023-12-20 01:03:10,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871308913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:10,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:10,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:10,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245678430] [2023-12-20 01:03:10,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:10,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:10,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:10,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:10,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:10,752 INFO L87 Difference]: Start difference. First operand 5058 states and 7145 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:10,887 INFO L93 Difference]: Finished difference Result 10065 states and 14349 transitions. [2023-12-20 01:03:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:10,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 01:03:10,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:10,917 INFO L225 Difference]: With dead ends: 10065 [2023-12-20 01:03:10,917 INFO L226 Difference]: Without dead ends: 8754 [2023-12-20 01:03:10,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:03:10,923 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 439 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:10,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 643 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8754 states. [2023-12-20 01:03:11,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8754 to 6303. [2023-12-20 01:03:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6303 states, 6302 states have (on average 1.41161536020311) internal successors, (8896), 6302 states have internal predecessors, (8896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6303 states to 6303 states and 8896 transitions. [2023-12-20 01:03:11,086 INFO L78 Accepts]: Start accepts. Automaton has 6303 states and 8896 transitions. Word has length 74 [2023-12-20 01:03:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:11,086 INFO L495 AbstractCegarLoop]: Abstraction has 6303 states and 8896 transitions. [2023-12-20 01:03:11,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6303 states and 8896 transitions. [2023-12-20 01:03:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:11,087 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:11,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:11,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:03:11,087 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:11,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:11,088 INFO L85 PathProgramCache]: Analyzing trace with hash 204855425, now seen corresponding path program 1 times [2023-12-20 01:03:11,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:11,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028531797] [2023-12-20 01:03:11,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:11,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 01:03:11,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:11,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028531797] [2023-12-20 01:03:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028531797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977118541] [2023-12-20 01:03:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:11,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:11,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:11,155 INFO L87 Difference]: Start difference. First operand 6303 states and 8896 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:11,345 INFO L93 Difference]: Finished difference Result 10874 states and 15465 transitions. [2023-12-20 01:03:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:11,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-20 01:03:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:11,359 INFO L225 Difference]: With dead ends: 10874 [2023-12-20 01:03:11,359 INFO L226 Difference]: Without dead ends: 9834 [2023-12-20 01:03:11,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 01:03:11,361 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 490 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:11,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 678 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 01:03:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2023-12-20 01:03:11,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 7383. [2023-12-20 01:03:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7382 states have (on average 1.4101869412083445) internal successors, (10410), 7382 states have internal predecessors, (10410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10410 transitions. [2023-12-20 01:03:11,533 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10410 transitions. Word has length 74 [2023-12-20 01:03:11,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:11,533 INFO L495 AbstractCegarLoop]: Abstraction has 7383 states and 10410 transitions. [2023-12-20 01:03:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,533 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10410 transitions. [2023-12-20 01:03:11,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:11,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:11,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:11,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 01:03:11,535 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:11,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash 952648443, now seen corresponding path program 1 times [2023-12-20 01:03:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:11,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584510143] [2023-12-20 01:03:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:11,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:11,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:11,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584510143] [2023-12-20 01:03:11,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584510143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:11,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:11,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:11,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279708517] [2023-12-20 01:03:11,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:11,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:11,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:11,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:11,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:11,586 INFO L87 Difference]: Start difference. First operand 7383 states and 10410 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:11,643 INFO L93 Difference]: Finished difference Result 10921 states and 15328 transitions. [2023-12-20 01:03:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-20 01:03:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:11,648 INFO L225 Difference]: With dead ends: 10921 [2023-12-20 01:03:11,648 INFO L226 Difference]: Without dead ends: 3568 [2023-12-20 01:03:11,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:11,654 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:11,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2023-12-20 01:03:11,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3476. [2023-12-20 01:03:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 1.3758273381294963) internal successors, (4781), 3475 states have internal predecessors, (4781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 4781 transitions. [2023-12-20 01:03:11,715 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 4781 transitions. Word has length 77 [2023-12-20 01:03:11,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:11,715 INFO L495 AbstractCegarLoop]: Abstraction has 3476 states and 4781 transitions. [2023-12-20 01:03:11,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 4781 transitions. [2023-12-20 01:03:11,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:11,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:11,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:11,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:03:11,716 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:11,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2099787166, now seen corresponding path program 1 times [2023-12-20 01:03:11,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:11,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338875776] [2023-12-20 01:03:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:11,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:11,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338875776] [2023-12-20 01:03:11,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338875776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:11,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967218834] [2023-12-20 01:03:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:11,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:11,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:11,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 01:03:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:12,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:03:12,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:12,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:13,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967218834] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:13,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:13,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-20 01:03:13,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012734994] [2023-12-20 01:03:13,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:13,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:03:13,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:13,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:03:13,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:03:13,357 INFO L87 Difference]: Start difference. First operand 3476 states and 4781 transitions. Second operand has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:16,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:16,094 INFO L93 Difference]: Finished difference Result 21653 states and 29481 transitions. [2023-12-20 01:03:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-20 01:03:16,094 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 states have internal predecessors, (215), 0 states have call successors, (0), 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 77 [2023-12-20 01:03:16,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:16,117 INFO L225 Difference]: With dead ends: 21653 [2023-12-20 01:03:16,117 INFO L226 Difference]: Without dead ends: 18213 [2023-12-20 01:03:16,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3507 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1946, Invalid=9396, Unknown=0, NotChecked=0, Total=11342 [2023-12-20 01:03:16,128 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 3904 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:16,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3904 Valid, 1517 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:03:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18213 states. [2023-12-20 01:03:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18213 to 9414. [2023-12-20 01:03:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9414 states, 9413 states have (on average 1.382024859237225) internal successors, (13009), 9413 states have internal predecessors, (13009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9414 states to 9414 states and 13009 transitions. [2023-12-20 01:03:16,389 INFO L78 Accepts]: Start accepts. Automaton has 9414 states and 13009 transitions. Word has length 77 [2023-12-20 01:03:16,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:16,389 INFO L495 AbstractCegarLoop]: Abstraction has 9414 states and 13009 transitions. [2023-12-20 01:03:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 28 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 9414 states and 13009 transitions. [2023-12-20 01:03:16,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:16,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:16,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:16,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:16,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:16,607 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:16,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -435948743, now seen corresponding path program 1 times [2023-12-20 01:03:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978494279] [2023-12-20 01:03:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:18,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:18,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978494279] [2023-12-20 01:03:18,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978494279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:18,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757824441] [2023-12-20 01:03:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:18,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:18,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:18,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:18,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 01:03:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:18,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 01:03:18,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:18,701 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:18,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:19,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757824441] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:19,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:19,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-20 01:03:19,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530793625] [2023-12-20 01:03:19,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:19,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 01:03:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 01:03:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2023-12-20 01:03:19,170 INFO L87 Difference]: Start difference. First operand 9414 states and 13009 transitions. Second operand has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:19,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:19,897 INFO L93 Difference]: Finished difference Result 35549 states and 48648 transitions. [2023-12-20 01:03:19,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 01:03:19,897 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 0 states have call successors, (0), 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 77 [2023-12-20 01:03:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:19,989 INFO L225 Difference]: With dead ends: 35549 [2023-12-20 01:03:19,989 INFO L226 Difference]: Without dead ends: 27428 [2023-12-20 01:03:19,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 01:03:19,999 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 842 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:19,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 647 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 01:03:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27428 states. [2023-12-20 01:03:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27428 to 24272. [2023-12-20 01:03:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24272 states, 24271 states have (on average 1.3580404598080014) internal successors, (32961), 24271 states have internal predecessors, (32961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24272 states to 24272 states and 32961 transitions. [2023-12-20 01:03:20,558 INFO L78 Accepts]: Start accepts. Automaton has 24272 states and 32961 transitions. Word has length 77 [2023-12-20 01:03:20,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:20,558 INFO L495 AbstractCegarLoop]: Abstraction has 24272 states and 32961 transitions. [2023-12-20 01:03:20,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.791666666666667) internal successors, (187), 23 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 24272 states and 32961 transitions. [2023-12-20 01:03:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:20,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:20,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:20,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:20,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:20,766 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:20,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash -789037125, now seen corresponding path program 1 times [2023-12-20 01:03:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185248956] [2023-12-20 01:03:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:20,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185248956] [2023-12-20 01:03:20,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185248956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:20,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420264732] [2023-12-20 01:03:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:20,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:20,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:20,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:20,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 01:03:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:21,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:03:21,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:21,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:22,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420264732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:22,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:22,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2023-12-20 01:03:22,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831700449] [2023-12-20 01:03:22,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:22,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 01:03:22,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 01:03:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2023-12-20 01:03:22,533 INFO L87 Difference]: Start difference. First operand 24272 states and 32961 transitions. Second operand has 26 states, 26 states have (on average 7.730769230769231) internal successors, (201), 25 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:23,857 INFO L93 Difference]: Finished difference Result 83099 states and 110828 transitions. [2023-12-20 01:03:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 01:03:23,858 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.730769230769231) internal successors, (201), 25 states have internal predecessors, (201), 0 states have call successors, (0), 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 77 [2023-12-20 01:03:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:23,937 INFO L225 Difference]: With dead ends: 83099 [2023-12-20 01:03:23,937 INFO L226 Difference]: Without dead ends: 58928 [2023-12-20 01:03:23,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=1165, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:03:23,956 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 1065 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:23,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 763 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:03:23,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58928 states. [2023-12-20 01:03:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58928 to 52226. [2023-12-20 01:03:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52226 states, 52225 states have (on average 1.3174341790330302) internal successors, (68803), 52225 states have internal predecessors, (68803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52226 states to 52226 states and 68803 transitions. [2023-12-20 01:03:25,707 INFO L78 Accepts]: Start accepts. Automaton has 52226 states and 68803 transitions. Word has length 77 [2023-12-20 01:03:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:25,708 INFO L495 AbstractCegarLoop]: Abstraction has 52226 states and 68803 transitions. [2023-12-20 01:03:25,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.730769230769231) internal successors, (201), 25 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 52226 states and 68803 transitions. [2023-12-20 01:03:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:03:25,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:25,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:25,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:25,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:25,920 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:25,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash 384090759, now seen corresponding path program 1 times [2023-12-20 01:03:25,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:25,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661820732] [2023-12-20 01:03:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:25,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661820732] [2023-12-20 01:03:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661820732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451128251] [2023-12-20 01:03:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:26,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:26,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:26,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:03:26,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 01:03:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:26,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 01:03:26,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:27,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:29,448 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:29,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451128251] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:29,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:29,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 38 [2023-12-20 01:03:29,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688510514] [2023-12-20 01:03:29,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:29,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-20 01:03:29,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:29,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-20 01:03:29,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:03:29,450 INFO L87 Difference]: Start difference. First operand 52226 states and 68803 transitions. Second operand has 39 states, 39 states have (on average 5.615384615384615) internal successors, (219), 38 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:33,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:33,943 INFO L93 Difference]: Finished difference Result 187524 states and 245780 transitions. [2023-12-20 01:03:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-20 01:03:33,943 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.615384615384615) internal successors, (219), 38 states have internal predecessors, (219), 0 states have call successors, (0), 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 [2023-12-20 01:03:33,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:34,121 INFO L225 Difference]: With dead ends: 187524 [2023-12-20 01:03:34,121 INFO L226 Difference]: Without dead ends: 135750 [2023-12-20 01:03:34,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2405 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1936, Invalid=6074, Unknown=0, NotChecked=0, Total=8010 [2023-12-20 01:03:34,178 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 1880 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:34,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 1438 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 01:03:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135750 states. [2023-12-20 01:03:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135750 to 93366. [2023-12-20 01:03:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93366 states, 93365 states have (on average 1.3116371231189419) internal successors, (122461), 93365 states have internal predecessors, (122461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93366 states to 93366 states and 122461 transitions. [2023-12-20 01:03:37,526 INFO L78 Accepts]: Start accepts. Automaton has 93366 states and 122461 transitions. Word has length 78 [2023-12-20 01:03:37,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 93366 states and 122461 transitions. [2023-12-20 01:03:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.615384615384615) internal successors, (219), 38 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 93366 states and 122461 transitions. [2023-12-20 01:03:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:03:37,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:37,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:37,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 01:03:37,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-20 01:03:37,754 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:37,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:37,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1110623065, now seen corresponding path program 1 times [2023-12-20 01:03:37,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:37,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172336462] [2023-12-20 01:03:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:37,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172336462] [2023-12-20 01:03:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172336462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:37,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:37,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882819845] [2023-12-20 01:03:37,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:37,801 INFO L87 Difference]: Start difference. First operand 93366 states and 122461 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2023-12-20 01:03:41,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:41,055 INFO L93 Difference]: Finished difference Result 234467 states and 308029 transitions. [2023-12-20 01:03:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 [2023-12-20 01:03:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:41,226 INFO L225 Difference]: With dead ends: 234467 [2023-12-20 01:03:41,227 INFO L226 Difference]: Without dead ends: 141426 [2023-12-20 01:03:41,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:41,289 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 48 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:41,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 230 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:41,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141426 states. [2023-12-20 01:03:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141426 to 108394. [2023-12-20 01:03:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108394 states, 108393 states have (on average 1.3054071757401309) internal successors, (141497), 108393 states have internal predecessors, (141497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108394 states to 108394 states and 141497 transitions. [2023-12-20 01:03:45,134 INFO L78 Accepts]: Start accepts. Automaton has 108394 states and 141497 transitions. Word has length 78 [2023-12-20 01:03:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:45,135 INFO L495 AbstractCegarLoop]: Abstraction has 108394 states and 141497 transitions. [2023-12-20 01:03:45,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2023-12-20 01:03:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 108394 states and 141497 transitions. [2023-12-20 01:03:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:03:45,140 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:45,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:45,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:03:45,141 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:45,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash -313767780, now seen corresponding path program 1 times [2023-12-20 01:03:45,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:45,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783987363] [2023-12-20 01:03:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:45,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:45,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:45,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783987363] [2023-12-20 01:03:45,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783987363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:45,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:45,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:45,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436167482] [2023-12-20 01:03:45,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:45,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:45,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:45,186 INFO L87 Difference]: Start difference. First operand 108394 states and 141497 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) [2023-12-20 01:03:47,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:47,610 INFO L93 Difference]: Finished difference Result 135516 states and 176587 transitions. [2023-12-20 01:03:47,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:47,610 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 [2023-12-20 01:03:47,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:47,784 INFO L225 Difference]: With dead ends: 135516 [2023-12-20 01:03:47,785 INFO L226 Difference]: Without dead ends: 99168 [2023-12-20 01:03:47,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:47,846 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 53 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:47,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 225 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99168 states. [2023-12-20 01:03:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99168 to 99166. [2023-12-20 01:03:50,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99166 states, 99165 states have (on average 1.2966671708768214) internal successors, (128584), 99165 states have internal predecessors, (128584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99166 states to 99166 states and 128584 transitions. [2023-12-20 01:03:51,008 INFO L78 Accepts]: Start accepts. Automaton has 99166 states and 128584 transitions. Word has length 79 [2023-12-20 01:03:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:51,008 INFO L495 AbstractCegarLoop]: Abstraction has 99166 states and 128584 transitions. [2023-12-20 01:03:51,008 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) [2023-12-20 01:03:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 99166 states and 128584 transitions. [2023-12-20 01:03:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:03:51,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:51,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:03:51,025 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:51,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1917975056, now seen corresponding path program 1 times [2023-12-20 01:03:51,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:51,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047657922] [2023-12-20 01:03:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:51,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:51,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:51,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:51,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047657922] [2023-12-20 01:03:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047657922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:51,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:51,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:51,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836956588] [2023-12-20 01:03:51,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:51,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:51,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:51,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:51,054 INFO L87 Difference]: Start difference. First operand 99166 states and 128584 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) [2023-12-20 01:03:54,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:54,097 INFO L93 Difference]: Finished difference Result 208691 states and 270606 transitions. [2023-12-20 01:03:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:54,098 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 [2023-12-20 01:03:54,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:54,280 INFO L225 Difference]: With dead ends: 208691 [2023-12-20 01:03:54,280 INFO L226 Difference]: Without dead ends: 116137 [2023-12-20 01:03:54,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:54,359 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 48 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:54,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 204 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116137 states. [2023-12-20 01:03:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116137 to 116135. [2023-12-20 01:03:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116135 states, 116134 states have (on average 1.2787555754559388) internal successors, (148507), 116134 states have internal predecessors, (148507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116135 states to 116135 states and 148507 transitions. [2023-12-20 01:03:57,907 INFO L78 Accepts]: Start accepts. Automaton has 116135 states and 148507 transitions. Word has length 79 [2023-12-20 01:03:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:57,908 INFO L495 AbstractCegarLoop]: Abstraction has 116135 states and 148507 transitions. [2023-12-20 01:03:57,908 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) [2023-12-20 01:03:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 116135 states and 148507 transitions. [2023-12-20 01:03:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:03:57,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:57,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:03:57,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 01:03:57,912 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:57,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash 805017532, now seen corresponding path program 1 times [2023-12-20 01:03:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:57,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542423048] [2023-12-20 01:03:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:57,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:03:57,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:57,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542423048] [2023-12-20 01:03:57,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542423048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:57,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:57,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:57,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479942143] [2023-12-20 01:03:57,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:57,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:57,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:57,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:57,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:57,945 INFO L87 Difference]: Start difference. First operand 116135 states and 148507 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) [2023-12-20 01:04:01,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:01,743 INFO L93 Difference]: Finished difference Result 262260 states and 333836 transitions. [2023-12-20 01:04:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:01,743 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 [2023-12-20 01:04:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:01,955 INFO L225 Difference]: With dead ends: 262260 [2023-12-20 01:04:01,956 INFO L226 Difference]: Without dead ends: 152271 [2023-12-20 01:04:02,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:02,005 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 45 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:02,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 211 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152271 states. [2023-12-20 01:04:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152271 to 140379. [2023-12-20 01:04:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140379 states, 140378 states have (on average 1.2498610893444841) internal successors, (175453), 140378 states have internal predecessors, (175453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140379 states to 140379 states and 175453 transitions. [2023-12-20 01:04:06,396 INFO L78 Accepts]: Start accepts. Automaton has 140379 states and 175453 transitions. Word has length 79 [2023-12-20 01:04:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:06,396 INFO L495 AbstractCegarLoop]: Abstraction has 140379 states and 175453 transitions. [2023-12-20 01:04:06,396 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) [2023-12-20 01:04:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 140379 states and 175453 transitions. [2023-12-20 01:04:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:04:06,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:06,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:06,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 01:04:06,433 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:06,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash 762114581, now seen corresponding path program 1 times [2023-12-20 01:04:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230494475] [2023-12-20 01:04:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:06,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:06,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230494475] [2023-12-20 01:04:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230494475] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:07,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490299374] [2023-12-20 01:04:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:07,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:07,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:04:07,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 01:04:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:07,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 01:04:07,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:07,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:08,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490299374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:08,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:08,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-12-20 01:04:08,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268750808] [2023-12-20 01:04:08,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:08,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:04:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:08,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:04:08,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:04:08,596 INFO L87 Difference]: Start difference. First operand 140379 states and 175453 transitions. Second operand has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 28 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:14,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:14,048 INFO L93 Difference]: Finished difference Result 242906 states and 303908 transitions. [2023-12-20 01:04:14,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 01:04:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 28 states have internal predecessors, (171), 0 states have call successors, (0), 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 [2023-12-20 01:04:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:14,310 INFO L225 Difference]: With dead ends: 242906 [2023-12-20 01:04:14,311 INFO L226 Difference]: Without dead ends: 204252 [2023-12-20 01:04:14,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 01:04:14,366 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1933 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:14,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 1329 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 01:04:14,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204252 states. [2023-12-20 01:04:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204252 to 158898. [2023-12-20 01:04:19,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158898 states, 158897 states have (on average 1.2480160103714986) internal successors, (198306), 158897 states have internal predecessors, (198306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158898 states to 158898 states and 198306 transitions. [2023-12-20 01:04:19,971 INFO L78 Accepts]: Start accepts. Automaton has 158898 states and 198306 transitions. Word has length 79 [2023-12-20 01:04:19,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:19,974 INFO L495 AbstractCegarLoop]: Abstraction has 158898 states and 198306 transitions. [2023-12-20 01:04:19,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 28 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 158898 states and 198306 transitions. [2023-12-20 01:04:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:04:19,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:19,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:19,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 01:04:20,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 01:04:20,184 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:20,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:20,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1298443655, now seen corresponding path program 1 times [2023-12-20 01:04:20,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:20,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74921131] [2023-12-20 01:04:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:20,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:20,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74921131] [2023-12-20 01:04:20,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74921131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:20,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795621961] [2023-12-20 01:04:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:20,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:20,228 INFO L87 Difference]: Start difference. First operand 158898 states and 198306 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) [2023-12-20 01:04:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:26,817 INFO L93 Difference]: Finished difference Result 402099 states and 500788 transitions. [2023-12-20 01:04:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:26,817 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 [2023-12-20 01:04:26,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:27,164 INFO L225 Difference]: With dead ends: 402099 [2023-12-20 01:04:27,164 INFO L226 Difference]: Without dead ends: 249528 [2023-12-20 01:04:27,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:27,233 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 43 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:27,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 225 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249528 states. [2023-12-20 01:04:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249528 to 249526. [2023-12-20 01:04:34,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249526 states, 249525 states have (on average 1.2198416992285341) internal successors, (304381), 249525 states have internal predecessors, (304381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249526 states to 249526 states and 304381 transitions. [2023-12-20 01:04:35,435 INFO L78 Accepts]: Start accepts. Automaton has 249526 states and 304381 transitions. Word has length 80 [2023-12-20 01:04:35,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 249526 states and 304381 transitions. [2023-12-20 01:04:35,436 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) [2023-12-20 01:04:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 249526 states and 304381 transitions. [2023-12-20 01:04:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 01:04:35,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:35,443 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:04:35,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 01:04:35,443 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:35,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1053821981, now seen corresponding path program 1 times [2023-12-20 01:04:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:35,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396511926] [2023-12-20 01:04:35,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:35,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 01:04:35,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:35,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396511926] [2023-12-20 01:04:35,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396511926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:35,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:35,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:35,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126815604] [2023-12-20 01:04:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:35,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:35,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:35,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:35,468 INFO L87 Difference]: Start difference. First operand 249526 states and 304381 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) [2023-12-20 01:04:41,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:41,249 INFO L93 Difference]: Finished difference Result 362568 states and 440561 transitions. [2023-12-20 01:04:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:41,250 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 [2023-12-20 01:04:41,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:41,611 INFO L225 Difference]: With dead ends: 362568 [2023-12-20 01:04:41,611 INFO L226 Difference]: Without dead ends: 217180 [2023-12-20 01:04:41,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:41,708 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 43 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:41,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 263 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217180 states.