/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.ufo.BOUNDED-8.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 01:03:23,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 01:03:23,381 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 01:03:23,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 01:03:23,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 01:03:23,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 01:03:23,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 01:03:23,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 01:03:23,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 01:03:23,413 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 01:03:23,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 01:03:23,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 01:03:23,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 01:03:23,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 01:03:23,415 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 01:03:23,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 01:03:23,415 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 01:03:23,416 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 01:03:23,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 01:03:23,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 01:03:23,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 01:03:23,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 01:03:23,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 01:03:23,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 01:03:23,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 01:03:23,418 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 01:03:23,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 01:03:23,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 01:03:23,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 01:03:23,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 01:03:23,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 01:03:23,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 01:03:23,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:03:23,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 01:03:23,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 01:03:23,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 01:03:23,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 01:03:23,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 01:03:23,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 01:03:23,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 01:03:23,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 01:03:23,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 01:03:23,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 01:03:23,421 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 01:03:23,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 01:03:23,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 01:03:23,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 01:03:23,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 01:03:23,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 01:03:23,655 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-12-20 01:03:24,842 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 01:03:25,050 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 01:03:25,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-12-20 01:03:25,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c191867/30e1a8ddaf034216aab9457cb08ebe3c/FLAG26828bd0e [2023-12-20 01:03:25,084 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c191867/30e1a8ddaf034216aab9457cb08ebe3c [2023-12-20 01:03:25,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 01:03:25,087 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 01:03:25,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 01:03:25,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 01:03:25,092 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 01:03:25,093 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a685e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25, skipping insertion in model container [2023-12-20 01:03:25,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 01:03:25,268 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.ufo.BOUNDED-8.pals.c[9392,9405] [2023-12-20 01:03:25,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:03:25,282 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 01:03:25,312 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.ufo.BOUNDED-8.pals.c[9392,9405] [2023-12-20 01:03:25,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 01:03:25,323 INFO L206 MainTranslator]: Completed translation [2023-12-20 01:03:25,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25 WrapperNode [2023-12-20 01:03:25,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 01:03:25,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 01:03:25,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 01:03:25,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 01:03:25,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,379 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 307 [2023-12-20 01:03:25,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 01:03:25,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 01:03:25,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 01:03:25,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 01:03:25,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,411 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 01:03:25,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 01:03:25,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 01:03:25,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 01:03:25,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 01:03:25,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (1/1) ... [2023-12-20 01:03:25,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 01:03:25,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:25,486 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 01:03:25,531 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 01:03:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 01:03:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 01:03:25,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 01:03:25,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 01:03:25,612 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 01:03:25,614 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 01:03:26,019 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 01:03:26,042 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 01:03:26,042 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 01:03:26,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:03:26 BoogieIcfgContainer [2023-12-20 01:03:26,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 01:03:26,046 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 01:03:26,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 01:03:26,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 01:03:26,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:03:25" (1/3) ... [2023-12-20 01:03:26,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb17212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:03:26, skipping insertion in model container [2023-12-20 01:03:26,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:03:25" (2/3) ... [2023-12-20 01:03:26,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb17212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:03:26, skipping insertion in model container [2023-12-20 01:03:26,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:03:26" (3/3) ... [2023-12-20 01:03:26,052 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c [2023-12-20 01:03:26,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 01:03:26,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 01:03:26,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 01:03:26,110 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;@7d1aaaa5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 01:03:26,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 01:03:26,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:03:26,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:26,119 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 01:03:26,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:26,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash -408434164, now seen corresponding path program 1 times [2023-12-20 01:03:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902918268] [2023-12-20 01:03:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:26,340 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 01:03:26,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:26,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902918268] [2023-12-20 01:03:26,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902918268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:26,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:26,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 01:03:26,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478205479] [2023-12-20 01:03:26,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:26,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 01:03:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 01:03:26,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 01:03:26,379 INFO L87 Difference]: Start difference. First operand has 79 states, 77 states have (on average 1.7792207792207793) internal successors, (137), 78 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 01:03:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:26,427 INFO L93 Difference]: Finished difference Result 131 states and 222 transitions. [2023-12-20 01:03:26,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 01:03:26,429 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 01:03:26,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:26,446 INFO L225 Difference]: With dead ends: 131 [2023-12-20 01:03:26,446 INFO L226 Difference]: Without dead ends: 77 [2023-12-20 01:03:26,448 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 01:03:26,451 INFO L413 NwaCegarLoop]: 130 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, 130 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 01:03:26,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-20 01:03:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-20 01:03:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.736842105263158) internal successors, (132), 76 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 01:03:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 132 transitions. [2023-12-20 01:03:26,475 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 132 transitions. Word has length 26 [2023-12-20 01:03:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:26,476 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 132 transitions. [2023-12-20 01:03:26,476 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 01:03:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 132 transitions. [2023-12-20 01:03:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-20 01:03:26,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:26,477 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 01:03:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 01:03:26,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:26,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2081094798, now seen corresponding path program 1 times [2023-12-20 01:03:26,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:26,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919309537] [2023-12-20 01:03:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:26,646 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 01:03:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:26,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919309537] [2023-12-20 01:03:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919309537] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:26,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:26,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:03:26,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145769470] [2023-12-20 01:03:26,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:26,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:03:26,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:03:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:03:26,649 INFO L87 Difference]: Start difference. First operand 77 states and 132 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 01:03:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:26,712 INFO L93 Difference]: Finished difference Result 178 states and 295 transitions. [2023-12-20 01:03:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:03:26,713 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 01:03:26,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:26,714 INFO L225 Difference]: With dead ends: 178 [2023-12-20 01:03:26,714 INFO L226 Difference]: Without dead ends: 126 [2023-12-20 01:03:26,715 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 01:03:26,715 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 79 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:26,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 354 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-12-20 01:03:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 77. [2023-12-20 01:03:26,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 108 transitions. [2023-12-20 01:03:26,722 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 108 transitions. Word has length 26 [2023-12-20 01:03:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:26,722 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 108 transitions. [2023-12-20 01:03:26,722 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 01:03:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 108 transitions. [2023-12-20 01:03:26,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:03:26,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:26,723 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 01:03:26,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 01:03:26,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:26,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1094162009, now seen corresponding path program 1 times [2023-12-20 01:03:26,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:26,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053754765] [2023-12-20 01:03:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:26,788 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 01:03:26,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:26,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053754765] [2023-12-20 01:03:26,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053754765] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:26,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:26,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32223073] [2023-12-20 01:03:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:26,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:26,790 INFO L87 Difference]: Start difference. First operand 77 states and 108 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 01:03:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:26,807 INFO L93 Difference]: Finished difference Result 167 states and 254 transitions. [2023-12-20 01:03:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:26,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 01:03:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:26,809 INFO L225 Difference]: With dead ends: 167 [2023-12-20 01:03:26,809 INFO L226 Difference]: Without dead ends: 118 [2023-12-20 01:03:26,809 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 01:03:26,810 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 229 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 01:03:26,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 229 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-20 01:03:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-12-20 01:03:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 115 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 01:03:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 172 transitions. [2023-12-20 01:03:26,818 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 172 transitions. Word has length 49 [2023-12-20 01:03:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 172 transitions. [2023-12-20 01:03:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 01:03:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 172 transitions. [2023-12-20 01:03:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:03:26,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:26,819 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 01:03:26,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 01:03:26,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:26,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash -114750088, now seen corresponding path program 1 times [2023-12-20 01:03:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:26,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14733102] [2023-12-20 01:03:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:26,871 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 01:03:26,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14733102] [2023-12-20 01:03:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14733102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:26,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489473400] [2023-12-20 01:03:26,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:26,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:26,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:26,873 INFO L87 Difference]: Start difference. First operand 116 states and 172 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 01:03:26,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:26,888 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2023-12-20 01:03:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:26,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 01:03:26,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:26,890 INFO L225 Difference]: With dead ends: 276 [2023-12-20 01:03:26,890 INFO L226 Difference]: Without dead ends: 188 [2023-12-20 01:03:26,891 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 01:03:26,891 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 60 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 226 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 01:03:26,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 226 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-20 01:03:26,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2023-12-20 01:03:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5405405405405406) internal successors, (285), 185 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:03:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 285 transitions. [2023-12-20 01:03:26,900 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 285 transitions. Word has length 49 [2023-12-20 01:03:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:26,900 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 285 transitions. [2023-12-20 01:03:26,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 01:03:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 285 transitions. [2023-12-20 01:03:26,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 01:03:26,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:26,901 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 01:03:26,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 01:03:26,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:26,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:26,902 INFO L85 PathProgramCache]: Analyzing trace with hash 796453911, now seen corresponding path program 1 times [2023-12-20 01:03:26,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:26,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261583509] [2023-12-20 01:03:26,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:26,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:26,999 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 01:03:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261583509] [2023-12-20 01:03:27,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261583509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:27,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607018846] [2023-12-20 01:03:27,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:27,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:27,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:27,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:27,003 INFO L87 Difference]: Start difference. First operand 186 states and 285 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 01:03:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:27,108 INFO L93 Difference]: Finished difference Result 976 states and 1570 transitions. [2023-12-20 01:03:27,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:27,109 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 01:03:27,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:27,113 INFO L225 Difference]: With dead ends: 976 [2023-12-20 01:03:27,114 INFO L226 Difference]: Without dead ends: 818 [2023-12-20 01:03:27,116 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 01:03:27,120 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 733 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 660 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-20 01:03:27,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 342. [2023-12-20 01:03:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.563049853372434) internal successors, (533), 341 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 01:03:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 533 transitions. [2023-12-20 01:03:27,137 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 533 transitions. Word has length 49 [2023-12-20 01:03:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:27,138 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 533 transitions. [2023-12-20 01:03:27,138 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 01:03:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 533 transitions. [2023-12-20 01:03:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 01:03:27,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:27,139 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 01:03:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 01:03:27,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:27,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1092763391, now seen corresponding path program 1 times [2023-12-20 01:03:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:27,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423331896] [2023-12-20 01:03:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:27,366 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 01:03:27,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:27,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423331896] [2023-12-20 01:03:27,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423331896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:27,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:27,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044595503] [2023-12-20 01:03:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:27,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:27,369 INFO L87 Difference]: Start difference. First operand 342 states and 533 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 01:03:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:27,399 INFO L93 Difference]: Finished difference Result 368 states and 566 transitions. [2023-12-20 01:03:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:27,400 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 01:03:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:27,401 INFO L225 Difference]: With dead ends: 368 [2023-12-20 01:03:27,401 INFO L226 Difference]: Without dead ends: 366 [2023-12-20 01:03:27,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:27,405 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 2 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 504 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 01:03:27,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 504 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-12-20 01:03:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2023-12-20 01:03:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.5378151260504203) internal successors, (549), 357 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 01:03:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 549 transitions. [2023-12-20 01:03:27,423 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 549 transitions. Word has length 50 [2023-12-20 01:03:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:27,425 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 549 transitions. [2023-12-20 01:03:27,425 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 01:03:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 549 transitions. [2023-12-20 01:03:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 01:03:27,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:27,428 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 01:03:27,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 01:03:27,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:27,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash 485103743, now seen corresponding path program 1 times [2023-12-20 01:03:27,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:27,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551556724] [2023-12-20 01:03:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:27,502 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 01:03:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:27,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551556724] [2023-12-20 01:03:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551556724] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:27,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:27,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838146821] [2023-12-20 01:03:27,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:27,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:27,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:27,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:27,505 INFO L87 Difference]: Start difference. First operand 358 states and 549 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 01:03:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:27,525 INFO L93 Difference]: Finished difference Result 962 states and 1495 transitions. [2023-12-20 01:03:27,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:27,526 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 01:03:27,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:27,528 INFO L225 Difference]: With dead ends: 962 [2023-12-20 01:03:27,528 INFO L226 Difference]: Without dead ends: 632 [2023-12-20 01:03:27,529 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 01:03:27,531 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 49 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 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 01:03:27,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 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 01:03:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-20 01:03:27,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2023-12-20 01:03:27,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.534181240063593) internal successors, (965), 629 states have internal predecessors, (965), 0 states have call successors, (0), 0 states 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 01:03:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 965 transitions. [2023-12-20 01:03:27,545 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 965 transitions. Word has length 51 [2023-12-20 01:03:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:27,545 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 965 transitions. [2023-12-20 01:03:27,545 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 01:03:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 965 transitions. [2023-12-20 01:03:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 01:03:27,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:27,547 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 01:03:27,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 01:03:27,547 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:27,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1884075168, now seen corresponding path program 1 times [2023-12-20 01:03:27,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:27,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762408047] [2023-12-20 01:03:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:27,598 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 01:03:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762408047] [2023-12-20 01:03:27,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762408047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:27,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:27,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:27,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729163368] [2023-12-20 01:03:27,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:27,599 INFO L87 Difference]: Start difference. First operand 630 states and 965 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 01:03:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:27,621 INFO L93 Difference]: Finished difference Result 1228 states and 1898 transitions. [2023-12-20 01:03:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:27,622 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 01:03:27,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:27,625 INFO L225 Difference]: With dead ends: 1228 [2023-12-20 01:03:27,625 INFO L226 Difference]: Without dead ends: 898 [2023-12-20 01:03:27,625 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 01:03:27,626 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 239 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 01:03:27,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 239 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:27,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-12-20 01:03:27,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 896. [2023-12-20 01:03:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 1.5273743016759778) internal successors, (1367), 895 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states 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 01:03:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1367 transitions. [2023-12-20 01:03:27,714 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1367 transitions. Word has length 51 [2023-12-20 01:03:27,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:27,715 INFO L495 AbstractCegarLoop]: Abstraction has 896 states and 1367 transitions. [2023-12-20 01:03:27,715 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 01:03:27,715 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1367 transitions. [2023-12-20 01:03:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 01:03:27,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:27,715 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 01:03:27,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 01:03:27,715 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:27,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:27,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2119290152, now seen corresponding path program 1 times [2023-12-20 01:03:27,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:27,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802615512] [2023-12-20 01:03:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:27,758 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 01:03:27,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:27,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802615512] [2023-12-20 01:03:27,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802615512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:27,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:27,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:27,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432890706] [2023-12-20 01:03:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:27,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:27,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:27,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:27,760 INFO L87 Difference]: Start difference. First operand 896 states and 1367 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 01:03:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:27,795 INFO L93 Difference]: Finished difference Result 2436 states and 3705 transitions. [2023-12-20 01:03:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:27,796 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 01:03:27,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:27,800 INFO L225 Difference]: With dead ends: 2436 [2023-12-20 01:03:27,801 INFO L226 Difference]: Without dead ends: 1570 [2023-12-20 01:03:27,804 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 01:03:27,806 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 56 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 233 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 01:03:27,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 233 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-20 01:03:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2023-12-20 01:03:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4952137843012125) internal successors, (2343), 1567 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states 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 01:03:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2343 transitions. [2023-12-20 01:03:27,842 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2343 transitions. Word has length 52 [2023-12-20 01:03:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:27,843 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2343 transitions. [2023-12-20 01:03:27,843 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 01:03:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2343 transitions. [2023-12-20 01:03:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:03:27,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:27,844 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 01:03:27,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 01:03:27,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:27,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:27,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2124847998, now seen corresponding path program 1 times [2023-12-20 01:03:27,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:27,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594149843] [2023-12-20 01:03:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:27,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:27,928 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 01:03:27,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:27,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594149843] [2023-12-20 01:03:27,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594149843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:27,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:27,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218171998] [2023-12-20 01:03:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:27,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:27,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:27,930 INFO L87 Difference]: Start difference. First operand 1568 states and 2343 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 01:03:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:27,961 INFO L93 Difference]: Finished difference Result 3108 states and 4657 transitions. [2023-12-20 01:03:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:27,962 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 01:03:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:27,966 INFO L225 Difference]: With dead ends: 3108 [2023-12-20 01:03:27,966 INFO L226 Difference]: Without dead ends: 1570 [2023-12-20 01:03:27,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:27,967 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 54 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 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 01:03:27,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 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 01:03:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-20 01:03:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1568. [2023-12-20 01:03:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1567 states have (on average 1.4798978940650924) internal successors, (2319), 1567 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states 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 01:03:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2319 transitions. [2023-12-20 01:03:27,999 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2319 transitions. Word has length 73 [2023-12-20 01:03:27,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:27,999 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2319 transitions. [2023-12-20 01:03:27,999 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 01:03:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2319 transitions. [2023-12-20 01:03:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 01:03:28,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:28,000 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 01:03:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 01:03:28,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:28,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash -172725725, now seen corresponding path program 1 times [2023-12-20 01:03:28,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:28,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971564615] [2023-12-20 01:03:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:28,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:29,368 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 01:03:29,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:29,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971564615] [2023-12-20 01:03:29,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971564615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:29,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167441686] [2023-12-20 01:03:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:29,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:29,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:29,372 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 01:03:29,378 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 01:03:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:29,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 01:03:29,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:29,611 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 01:03:29,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:29,890 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 01:03:29,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167441686] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:29,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:29,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 21 [2023-12-20 01:03:29,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272885227] [2023-12-20 01:03:29,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:29,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 01:03:29,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:29,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 01:03:29,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-20 01:03:29,892 INFO L87 Difference]: Start difference. First operand 1568 states and 2319 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 01:03:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:33,421 INFO L93 Difference]: Finished difference Result 15206 states and 22042 transitions. [2023-12-20 01:03:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-20 01:03:33,422 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 01:03:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:33,455 INFO L225 Difference]: With dead ends: 15206 [2023-12-20 01:03:33,455 INFO L226 Difference]: Without dead ends: 14148 [2023-12-20 01:03:33,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3906 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1715, Invalid=8997, Unknown=0, NotChecked=0, Total=10712 [2023-12-20 01:03:33,461 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 5239 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5239 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:33,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5239 Valid, 1777 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:03:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14148 states. [2023-12-20 01:03:33,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14148 to 9744. [2023-12-20 01:03:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9744 states, 9743 states have (on average 1.4680283280303807) internal successors, (14303), 9743 states have internal predecessors, (14303), 0 states have call successors, (0), 0 states 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 01:03:33,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9744 states to 9744 states and 14303 transitions. [2023-12-20 01:03:33,711 INFO L78 Accepts]: Start accepts. Automaton has 9744 states and 14303 transitions. Word has length 73 [2023-12-20 01:03:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:33,712 INFO L495 AbstractCegarLoop]: Abstraction has 9744 states and 14303 transitions. [2023-12-20 01:03:33,712 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 01:03:33,712 INFO L276 IsEmpty]: Start isEmpty. Operand 9744 states and 14303 transitions. [2023-12-20 01:03:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:33,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:33,713 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 01:03:33,731 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 01:03:33,919 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,SelfDestructingSolverStorable10 [2023-12-20 01:03:33,920 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:33,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash 528187530, now seen corresponding path program 1 times [2023-12-20 01:03:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349533334] [2023-12-20 01:03:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:34,032 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 01:03:34,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:34,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349533334] [2023-12-20 01:03:34,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349533334] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:34,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:34,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281201756] [2023-12-20 01:03:34,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:34,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:34,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:34,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:34,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:34,034 INFO L87 Difference]: Start difference. First operand 9744 states and 14303 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 01:03:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:34,381 INFO L93 Difference]: Finished difference Result 28906 states and 42739 transitions. [2023-12-20 01:03:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:34,381 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 01:03:34,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:34,424 INFO L225 Difference]: With dead ends: 28906 [2023-12-20 01:03:34,424 INFO L226 Difference]: Without dead ends: 23894 [2023-12-20 01:03:34,430 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 01:03:34,430 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 455 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:34,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 659 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:34,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23894 states. [2023-12-20 01:03:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23894 to 14514. [2023-12-20 01:03:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14514 states, 14513 states have (on average 1.4630331426996486) internal successors, (21233), 14513 states have internal predecessors, (21233), 0 states have call successors, (0), 0 states 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 01:03:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14514 states to 14514 states and 21233 transitions. [2023-12-20 01:03:34,791 INFO L78 Accepts]: Start accepts. Automaton has 14514 states and 21233 transitions. Word has length 74 [2023-12-20 01:03:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:34,791 INFO L495 AbstractCegarLoop]: Abstraction has 14514 states and 21233 transitions. [2023-12-20 01:03:34,791 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 01:03:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 14514 states and 21233 transitions. [2023-12-20 01:03:34,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:34,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:34,793 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 01:03:34,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 01:03:34,793 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:34,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:34,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1273743992, now seen corresponding path program 1 times [2023-12-20 01:03:34,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:34,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589218022] [2023-12-20 01:03:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:34,906 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 01:03:34,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:34,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589218022] [2023-12-20 01:03:34,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589218022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:34,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:34,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:34,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177257321] [2023-12-20 01:03:34,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:34,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:34,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:34,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:34,908 INFO L87 Difference]: Start difference. First operand 14514 states and 21233 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 01:03:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:35,285 INFO L93 Difference]: Finished difference Result 33676 states and 49669 transitions. [2023-12-20 01:03:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:35,285 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 01:03:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:35,325 INFO L225 Difference]: With dead ends: 33676 [2023-12-20 01:03:35,325 INFO L226 Difference]: Without dead ends: 28664 [2023-12-20 01:03:35,332 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 01:03:35,333 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 496 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:35,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 585 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:35,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28664 states. [2023-12-20 01:03:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28664 to 19284. [2023-12-20 01:03:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19284 states, 19283 states have (on average 1.4605092568583726) internal successors, (28163), 19283 states have internal predecessors, (28163), 0 states have call successors, (0), 0 states 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 01:03:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19284 states to 19284 states and 28163 transitions. [2023-12-20 01:03:35,769 INFO L78 Accepts]: Start accepts. Automaton has 19284 states and 28163 transitions. Word has length 74 [2023-12-20 01:03:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:35,769 INFO L495 AbstractCegarLoop]: Abstraction has 19284 states and 28163 transitions. [2023-12-20 01:03:35,769 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 01:03:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19284 states and 28163 transitions. [2023-12-20 01:03:35,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:35,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:35,771 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 01:03:35,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 01:03:35,771 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:35,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:35,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1898243706, now seen corresponding path program 1 times [2023-12-20 01:03:35,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:35,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238156466] [2023-12-20 01:03:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:35,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:35,856 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 01:03:35,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:35,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238156466] [2023-12-20 01:03:35,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238156466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:35,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:35,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144394098] [2023-12-20 01:03:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:35,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:35,859 INFO L87 Difference]: Start difference. First operand 19284 states and 28163 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 01:03:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:36,379 INFO L93 Difference]: Finished difference Result 38446 states and 56599 transitions. [2023-12-20 01:03:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:36,380 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 01:03:36,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:36,425 INFO L225 Difference]: With dead ends: 38446 [2023-12-20 01:03:36,425 INFO L226 Difference]: Without dead ends: 33434 [2023-12-20 01:03:36,436 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 01:03:36,437 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 464 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:36,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 657 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33434 states. [2023-12-20 01:03:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33434 to 24054. [2023-12-20 01:03:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24054 states, 24053 states have (on average 1.4589864050222425) internal successors, (35093), 24053 states have internal predecessors, (35093), 0 states have call successors, (0), 0 states 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 01:03:37,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24054 states to 24054 states and 35093 transitions. [2023-12-20 01:03:37,007 INFO L78 Accepts]: Start accepts. Automaton has 24054 states and 35093 transitions. Word has length 74 [2023-12-20 01:03:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:37,007 INFO L495 AbstractCegarLoop]: Abstraction has 24054 states and 35093 transitions. [2023-12-20 01:03:37,008 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 01:03:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 24054 states and 35093 transitions. [2023-12-20 01:03:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 01:03:37,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:37,009 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 01:03:37,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 01:03:37,010 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:37,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:37,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783157, now seen corresponding path program 1 times [2023-12-20 01:03:37,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:37,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900873750] [2023-12-20 01:03:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:37,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:37,082 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 01:03:37,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:37,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900873750] [2023-12-20 01:03:37,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900873750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:37,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:37,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 01:03:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826420652] [2023-12-20 01:03:37,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:37,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 01:03:37,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 01:03:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 01:03:37,083 INFO L87 Difference]: Start difference. First operand 24054 states and 35093 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 01:03:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:37,636 INFO L93 Difference]: Finished difference Result 41572 states and 61053 transitions. [2023-12-20 01:03:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 01:03:37,637 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 01:03:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:37,686 INFO L225 Difference]: With dead ends: 41572 [2023-12-20 01:03:37,686 INFO L226 Difference]: Without dead ends: 37592 [2023-12-20 01:03:37,699 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 01:03:37,699 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 451 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:37,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 729 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37592 states. [2023-12-20 01:03:38,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37592 to 28212. [2023-12-20 01:03:38,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28212 states, 28211 states have (on average 1.4572329942221118) internal successors, (41110), 28211 states have internal predecessors, (41110), 0 states have call successors, (0), 0 states 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 01:03:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28212 states to 28212 states and 41110 transitions. [2023-12-20 01:03:38,346 INFO L78 Accepts]: Start accepts. Automaton has 28212 states and 41110 transitions. Word has length 74 [2023-12-20 01:03:38,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:38,347 INFO L495 AbstractCegarLoop]: Abstraction has 28212 states and 41110 transitions. [2023-12-20 01:03:38,347 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 01:03:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28212 states and 41110 transitions. [2023-12-20 01:03:38,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:38,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:38,349 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 01:03:38,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 01:03:38,350 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:38,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:38,350 INFO L85 PathProgramCache]: Analyzing trace with hash -927044264, now seen corresponding path program 1 times [2023-12-20 01:03:38,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282410898] [2023-12-20 01:03:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:38,404 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 01:03:38,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282410898] [2023-12-20 01:03:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282410898] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:38,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:38,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490474183] [2023-12-20 01:03:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:38,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:38,405 INFO L87 Difference]: Start difference. First operand 28212 states and 41110 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 01:03:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:38,721 INFO L93 Difference]: Finished difference Result 40436 states and 58699 transitions. [2023-12-20 01:03:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:38,721 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 01:03:38,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:38,735 INFO L225 Difference]: With dead ends: 40436 [2023-12-20 01:03:38,735 INFO L226 Difference]: Without dead ends: 12254 [2023-12-20 01:03:38,757 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 01:03:38,758 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 44 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 217 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 01:03:38,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2023-12-20 01:03:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 11952. [2023-12-20 01:03:39,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11952 states, 11951 states have (on average 1.4283323571249267) internal successors, (17070), 11951 states have internal predecessors, (17070), 0 states have call successors, (0), 0 states 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 01:03:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11952 states to 11952 states and 17070 transitions. [2023-12-20 01:03:39,099 INFO L78 Accepts]: Start accepts. Automaton has 11952 states and 17070 transitions. Word has length 77 [2023-12-20 01:03:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:39,099 INFO L495 AbstractCegarLoop]: Abstraction has 11952 states and 17070 transitions. [2023-12-20 01:03:39,099 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 01:03:39,099 INFO L276 IsEmpty]: Start isEmpty. Operand 11952 states and 17070 transitions. [2023-12-20 01:03:39,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:39,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:39,100 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 01:03:39,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 01:03:39,101 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:39,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1454634311, now seen corresponding path program 1 times [2023-12-20 01:03:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:39,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402440667] [2023-12-20 01:03:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:39,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:39,319 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 01:03:39,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:39,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402440667] [2023-12-20 01:03:39,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402440667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:39,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484807004] [2023-12-20 01:03:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:39,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:39,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:39,334 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 01:03:39,363 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 01:03:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:39,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:03:39,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:39,899 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 01:03:39,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:40,715 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 01:03:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484807004] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:40,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:40,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-20 01:03:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498282107] [2023-12-20 01:03:40,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 01:03:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 01:03:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2023-12-20 01:03:40,717 INFO L87 Difference]: Start difference. First operand 11952 states and 17070 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 01:03:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:46,405 INFO L93 Difference]: Finished difference Result 100841 states and 141409 transitions. [2023-12-20 01:03:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-12-20 01:03:46,405 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 01:03:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:46,518 INFO L225 Difference]: With dead ends: 100841 [2023-12-20 01:03:46,518 INFO L226 Difference]: Without dead ends: 88926 [2023-12-20 01:03:46,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10115 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3881, Invalid=23509, Unknown=0, NotChecked=0, Total=27390 [2023-12-20 01:03:46,550 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 6110 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6110 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:46,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6110 Valid, 1725 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 01:03:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88926 states. [2023-12-20 01:03:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88926 to 28920. [2023-12-20 01:03:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28920 states, 28919 states have (on average 1.4308586050693315) internal successors, (41379), 28919 states have internal predecessors, (41379), 0 states have call successors, (0), 0 states 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 01:03:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28920 states to 28920 states and 41379 transitions. [2023-12-20 01:03:47,493 INFO L78 Accepts]: Start accepts. Automaton has 28920 states and 41379 transitions. Word has length 77 [2023-12-20 01:03:47,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:47,493 INFO L495 AbstractCegarLoop]: Abstraction has 28920 states and 41379 transitions. [2023-12-20 01:03:47,493 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 01:03:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28920 states and 41379 transitions. [2023-12-20 01:03:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:47,495 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:47,495 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 01:03:47,503 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 01:03:47,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-20 01:03:47,700 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:47,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1898925238, now seen corresponding path program 1 times [2023-12-20 01:03:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:47,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346807706] [2023-12-20 01:03:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:47,745 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 01:03:47,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:47,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346807706] [2023-12-20 01:03:47,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346807706] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:47,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:47,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:47,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302619678] [2023-12-20 01:03:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:47,746 INFO L87 Difference]: Start difference. First operand 28920 states and 41379 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 01:03:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:48,181 INFO L93 Difference]: Finished difference Result 42762 states and 61131 transitions. [2023-12-20 01:03:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:48,182 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 01:03:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:48,202 INFO L225 Difference]: With dead ends: 42762 [2023-12-20 01:03:48,202 INFO L226 Difference]: Without dead ends: 16691 [2023-12-20 01:03:48,218 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 01:03:48,219 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 35 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 195 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 01:03:48,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 195 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16691 states. [2023-12-20 01:03:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16691 to 16347. [2023-12-20 01:03:48,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16347 states, 16346 states have (on average 1.4019331946653615) internal successors, (22916), 16346 states have internal predecessors, (22916), 0 states have call successors, (0), 0 states 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 01:03:48,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16347 states to 16347 states and 22916 transitions. [2023-12-20 01:03:48,644 INFO L78 Accepts]: Start accepts. Automaton has 16347 states and 22916 transitions. Word has length 77 [2023-12-20 01:03:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:48,645 INFO L495 AbstractCegarLoop]: Abstraction has 16347 states and 22916 transitions. [2023-12-20 01:03:48,645 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 01:03:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 16347 states and 22916 transitions. [2023-12-20 01:03:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:48,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:48,650 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 01:03:48,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 01:03:48,650 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:48,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1689859897, now seen corresponding path program 1 times [2023-12-20 01:03:48,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:48,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059492850] [2023-12-20 01:03:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:48,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:50,205 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 01:03:50,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059492850] [2023-12-20 01:03:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059492850] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:03:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791941385] [2023-12-20 01:03:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:50,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:50,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:03:50,221 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 01:03:50,247 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 01:03:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:50,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 01:03:50,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:03:50,631 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 01:03:50,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:03:51,081 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 01:03:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791941385] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:03:51,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:03:51,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-12-20 01:03:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703768266] [2023-12-20 01:03:51,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:03:51,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 01:03:51,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 01:03:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-12-20 01:03:51,083 INFO L87 Difference]: Start difference. First operand 16347 states and 22916 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 01:03:52,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:52,491 INFO L93 Difference]: Finished difference Result 68428 states and 95070 transitions. [2023-12-20 01:03:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-20 01:03:52,491 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 01:03:52,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:52,568 INFO L225 Difference]: With dead ends: 68428 [2023-12-20 01:03:52,568 INFO L226 Difference]: Without dead ends: 55110 [2023-12-20 01:03:52,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=342, Invalid=1218, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 01:03:52,593 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1329 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 01:03:52,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 692 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 01:03:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55110 states. [2023-12-20 01:03:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55110 to 38093. [2023-12-20 01:03:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38093 states, 38092 states have (on average 1.39184080646855) internal successors, (53018), 38092 states have internal predecessors, (53018), 0 states have call successors, (0), 0 states 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 01:03:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38093 states to 38093 states and 53018 transitions. [2023-12-20 01:03:53,671 INFO L78 Accepts]: Start accepts. Automaton has 38093 states and 53018 transitions. Word has length 77 [2023-12-20 01:03:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:53,673 INFO L495 AbstractCegarLoop]: Abstraction has 38093 states and 53018 transitions. [2023-12-20 01:03:53,673 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 01:03:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 38093 states and 53018 transitions. [2023-12-20 01:03:53,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 01:03:53,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:53,676 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 01:03:53,681 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 01:03:53,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:03:53,881 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:53,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash 290888472, now seen corresponding path program 1 times [2023-12-20 01:03:53,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:53,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766548279] [2023-12-20 01:03:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:53,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:53,939 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 01:03:53,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:53,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766548279] [2023-12-20 01:03:53,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766548279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:53,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:53,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696276183] [2023-12-20 01:03:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:53,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:53,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:53,941 INFO L87 Difference]: Start difference. First operand 38093 states and 53018 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 01:03:54,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:54,339 INFO L93 Difference]: Finished difference Result 58937 states and 82045 transitions. [2023-12-20 01:03:54,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:54,340 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 01:03:54,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:54,368 INFO L225 Difference]: With dead ends: 58937 [2023-12-20 01:03:54,369 INFO L226 Difference]: Without dead ends: 24454 [2023-12-20 01:03:54,390 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 01:03:54,392 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 28 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 182 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 01:03:54,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 182 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24454 states. [2023-12-20 01:03:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24454 to 24452. [2023-12-20 01:03:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24452 states, 24451 states have (on average 1.3627663490245798) internal successors, (33321), 24451 states have internal predecessors, (33321), 0 states have call successors, (0), 0 states 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 01:03:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24452 states to 24452 states and 33321 transitions. [2023-12-20 01:03:55,073 INFO L78 Accepts]: Start accepts. Automaton has 24452 states and 33321 transitions. Word has length 77 [2023-12-20 01:03:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:55,074 INFO L495 AbstractCegarLoop]: Abstraction has 24452 states and 33321 transitions. [2023-12-20 01:03:55,074 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 01:03:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 24452 states and 33321 transitions. [2023-12-20 01:03:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:03:55,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:55,075 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 01:03:55,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 01:03:55,076 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:55,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash -809290575, now seen corresponding path program 1 times [2023-12-20 01:03:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933635701] [2023-12-20 01:03:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:55,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:55,106 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 01:03:55,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:55,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933635701] [2023-12-20 01:03:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933635701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:55,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:55,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:55,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705765220] [2023-12-20 01:03:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:55,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:55,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:55,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:55,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:55,107 INFO L87 Difference]: Start difference. First operand 24452 states and 33321 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 01:03:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:55,753 INFO L93 Difference]: Finished difference Result 54907 states and 74780 transitions. [2023-12-20 01:03:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:55,754 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 01:03:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:55,788 INFO L225 Difference]: With dead ends: 54907 [2023-12-20 01:03:55,788 INFO L226 Difference]: Without dead ends: 33258 [2023-12-20 01:03:55,801 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 01:03:55,802 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 53 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 221 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 01:03:55,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 221 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33258 states. [2023-12-20 01:03:56,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33258 to 33256. [2023-12-20 01:03:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33256 states, 33255 states have (on average 1.3448503984363254) internal successors, (44723), 33255 states have internal predecessors, (44723), 0 states have call successors, (0), 0 states 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 01:03:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33256 states to 33256 states and 44723 transitions. [2023-12-20 01:03:56,597 INFO L78 Accepts]: Start accepts. Automaton has 33256 states and 44723 transitions. Word has length 78 [2023-12-20 01:03:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:56,597 INFO L495 AbstractCegarLoop]: Abstraction has 33256 states and 44723 transitions. [2023-12-20 01:03:56,597 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 01:03:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 33256 states and 44723 transitions. [2023-12-20 01:03:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:03:56,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:56,609 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 01:03:56,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 01:03:56,609 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:56,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:56,609 INFO L85 PathProgramCache]: Analyzing trace with hash -914614435, now seen corresponding path program 1 times [2023-12-20 01:03:56,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:56,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580134690] [2023-12-20 01:03:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:56,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:56,648 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 01:03:56,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:56,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580134690] [2023-12-20 01:03:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580134690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:56,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595625576] [2023-12-20 01:03:56,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:56,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:56,649 INFO L87 Difference]: Start difference. First operand 33256 states and 44723 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 01:03:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:03:57,613 INFO L93 Difference]: Finished difference Result 84012 states and 112135 transitions. [2023-12-20 01:03:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:03:57,614 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 01:03:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:03:57,679 INFO L225 Difference]: With dead ends: 84012 [2023-12-20 01:03:57,679 INFO L226 Difference]: Without dead ends: 52277 [2023-12-20 01:03:57,699 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 01:03:57,699 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 50 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 216 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 01:03:57,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 216 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:03:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52277 states. [2023-12-20 01:03:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52277 to 52275. [2023-12-20 01:03:59,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52275 states, 52274 states have (on average 1.310402877147339) internal successors, (68500), 52274 states have internal predecessors, (68500), 0 states have call successors, (0), 0 states 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 01:03:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52275 states to 52275 states and 68500 transitions. [2023-12-20 01:03:59,109 INFO L78 Accepts]: Start accepts. Automaton has 52275 states and 68500 transitions. Word has length 78 [2023-12-20 01:03:59,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:03:59,110 INFO L495 AbstractCegarLoop]: Abstraction has 52275 states and 68500 transitions. [2023-12-20 01:03:59,110 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 01:03:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 52275 states and 68500 transitions. [2023-12-20 01:03:59,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:03:59,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:03:59,114 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 01:03:59,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 01:03:59,114 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:03:59,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:03:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1494851121, now seen corresponding path program 1 times [2023-12-20 01:03:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:03:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99895574] [2023-12-20 01:03:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:03:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:03:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:03:59,150 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 01:03:59,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:03:59,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99895574] [2023-12-20 01:03:59,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99895574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:03:59,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:03:59,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:03:59,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529506351] [2023-12-20 01:03:59,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:03:59,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:03:59,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:03:59,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:03:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:03:59,151 INFO L87 Difference]: Start difference. First operand 52275 states and 68500 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 01:04:00,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:00,789 INFO L93 Difference]: Finished difference Result 137266 states and 178429 transitions. [2023-12-20 01:04:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:00,790 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 01:04:00,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:00,891 INFO L225 Difference]: With dead ends: 137266 [2023-12-20 01:04:00,891 INFO L226 Difference]: Without dead ends: 88260 [2023-12-20 01:04:01,022 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 01:04:01,022 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 47 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 222 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 01:04:01,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 222 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88260 states. [2023-12-20 01:04:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88260 to 88258. [2023-12-20 01:04:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88258 states, 88257 states have (on average 1.2744824773105816) internal successors, (112482), 88257 states have internal predecessors, (112482), 0 states have call successors, (0), 0 states 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 01:04:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88258 states to 88258 states and 112482 transitions. [2023-12-20 01:04:03,103 INFO L78 Accepts]: Start accepts. Automaton has 88258 states and 112482 transitions. Word has length 78 [2023-12-20 01:04:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:03,103 INFO L495 AbstractCegarLoop]: Abstraction has 88258 states and 112482 transitions. [2023-12-20 01:04:03,103 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 01:04:03,103 INFO L276 IsEmpty]: Start isEmpty. Operand 88258 states and 112482 transitions. [2023-12-20 01:04:03,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:04:03,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:03,110 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 01:04:03,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 01:04:03,110 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:03,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1439203861, now seen corresponding path program 1 times [2023-12-20 01:04:03,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:03,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069172172] [2023-12-20 01:04:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:03,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:03,137 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 01:04:03,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:03,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069172172] [2023-12-20 01:04:03,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069172172] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:03,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:03,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:03,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504271949] [2023-12-20 01:04:03,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:03,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:03,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:03,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:03,139 INFO L87 Difference]: Start difference. First operand 88258 states and 112482 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 01:04:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:04,918 INFO L93 Difference]: Finished difference Result 131584 states and 166849 transitions. [2023-12-20 01:04:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:04,919 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 01:04:04,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:05,010 INFO L225 Difference]: With dead ends: 131584 [2023-12-20 01:04:05,010 INFO L226 Difference]: Without dead ends: 86914 [2023-12-20 01:04:05,030 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 01:04:05,030 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 47 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 268 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 01:04:05,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 268 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86914 states. [2023-12-20 01:04:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86914 to 83907. [2023-12-20 01:04:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83907 states, 83906 states have (on average 1.252258479727314) internal successors, (105072), 83906 states have internal predecessors, (105072), 0 states have call successors, (0), 0 states 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 01:04:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83907 states to 83907 states and 105072 transitions. [2023-12-20 01:04:07,344 INFO L78 Accepts]: Start accepts. Automaton has 83907 states and 105072 transitions. Word has length 78 [2023-12-20 01:04:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:07,345 INFO L495 AbstractCegarLoop]: Abstraction has 83907 states and 105072 transitions. [2023-12-20 01:04:07,345 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 01:04:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 83907 states and 105072 transitions. [2023-12-20 01:04:07,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:04:07,373 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:07,373 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 01:04:07,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 01:04:07,374 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:07,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:07,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1259051597, now seen corresponding path program 1 times [2023-12-20 01:04:07,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:07,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809644996] [2023-12-20 01:04:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:07,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:07,408 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 01:04:07,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:07,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809644996] [2023-12-20 01:04:07,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809644996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:04:07,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:04:07,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:04:07,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145265215] [2023-12-20 01:04:07,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:04:07,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:04:07,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:04:07,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:04:07,409 INFO L87 Difference]: Start difference. First operand 83907 states and 105072 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 01:04:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:08,916 INFO L93 Difference]: Finished difference Result 118932 states and 148511 transitions. [2023-12-20 01:04:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 01:04:08,917 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 01:04:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:08,991 INFO L225 Difference]: With dead ends: 118932 [2023-12-20 01:04:08,991 INFO L226 Difference]: Without dead ends: 70925 [2023-12-20 01:04:09,015 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 01:04:09,016 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 50 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 259 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 01:04:09,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 259 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:04:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70925 states. [2023-12-20 01:04:10,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70925 to 67096. [2023-12-20 01:04:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67096 states, 67095 states have (on average 1.2381846635367761) internal successors, (83076), 67095 states have internal predecessors, (83076), 0 states have call successors, (0), 0 states 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 01:04:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67096 states to 67096 states and 83076 transitions. [2023-12-20 01:04:10,933 INFO L78 Accepts]: Start accepts. Automaton has 67096 states and 83076 transitions. Word has length 78 [2023-12-20 01:04:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:10,933 INFO L495 AbstractCegarLoop]: Abstraction has 67096 states and 83076 transitions. [2023-12-20 01:04:10,933 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 01:04:10,934 INFO L276 IsEmpty]: Start isEmpty. Operand 67096 states and 83076 transitions. [2023-12-20 01:04:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 01:04:10,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:10,947 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 01:04:10,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 01:04:10,947 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:10,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:10,947 INFO L85 PathProgramCache]: Analyzing trace with hash -801187947, now seen corresponding path program 1 times [2023-12-20 01:04:10,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:10,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428489636] [2023-12-20 01:04:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:10,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:11,200 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 01:04:11,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:11,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428489636] [2023-12-20 01:04:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428489636] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69967117] [2023-12-20 01:04:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:11,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:11,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:11,202 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 01:04:11,203 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 01:04:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:11,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:04:11,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:11,696 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 01:04:11,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:12,769 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 01:04:12,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69967117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:12,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:12,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2023-12-20 01:04:12,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744696349] [2023-12-20 01:04:12,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:12,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 01:04:12,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:12,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 01:04:12,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2023-12-20 01:04:12,772 INFO L87 Difference]: Start difference. First operand 67096 states and 83076 transitions. Second operand has 26 states, 26 states have (on average 7.846153846153846) internal successors, (204), 25 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:15,623 INFO L93 Difference]: Finished difference Result 196513 states and 242169 transitions. [2023-12-20 01:04:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 01:04:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.846153846153846) internal successors, (204), 25 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-20 01:04:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:15,775 INFO L225 Difference]: With dead ends: 196513 [2023-12-20 01:04:15,775 INFO L226 Difference]: Without dead ends: 130216 [2023-12-20 01:04:15,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=304, Invalid=1178, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 01:04:15,807 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 538 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:15,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 870 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 01:04:15,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130216 states. [2023-12-20 01:04:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130216 to 124262. [2023-12-20 01:04:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124262 states, 124261 states have (on average 1.231375894287025) internal successors, (153012), 124261 states have internal predecessors, (153012), 0 states have call successors, (0), 0 states 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 01:04:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124262 states to 124262 states and 153012 transitions. [2023-12-20 01:04:19,382 INFO L78 Accepts]: Start accepts. Automaton has 124262 states and 153012 transitions. Word has length 78 [2023-12-20 01:04:19,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:19,382 INFO L495 AbstractCegarLoop]: Abstraction has 124262 states and 153012 transitions. [2023-12-20 01:04:19,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.846153846153846) internal successors, (204), 25 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:04:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 124262 states and 153012 transitions. [2023-12-20 01:04:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:04:19,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:19,387 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 01:04:19,393 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 01:04:19,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 01:04:19,593 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:19,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash 226438197, now seen corresponding path program 1 times [2023-12-20 01:04:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:19,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657604034] [2023-12-20 01:04:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:19,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:20,377 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 01:04:20,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657604034] [2023-12-20 01:04:20,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657604034] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:20,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733864199] [2023-12-20 01:04:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:20,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:20,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:20,389 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 01:04:20,413 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 01:04:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:20,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 01:04:20,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:21,416 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 01:04:21,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:22,162 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 01:04:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733864199] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:22,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-20 01:04:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430817514] [2023-12-20 01:04:22,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 01:04:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:22,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 01:04:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-12-20 01:04:22,164 INFO L87 Difference]: Start difference. First operand 124262 states and 153012 transitions. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 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 01:04:45,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:04:45,003 INFO L93 Difference]: Finished difference Result 720341 states and 872261 transitions. [2023-12-20 01:04:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-12-20 01:04:45,004 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 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 79 [2023-12-20 01:04:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:04:45,993 INFO L225 Difference]: With dead ends: 720341 [2023-12-20 01:04:45,993 INFO L226 Difference]: Without dead ends: 597604 [2023-12-20 01:04:46,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18011 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=6778, Invalid=38378, Unknown=0, NotChecked=0, Total=45156 [2023-12-20 01:04:46,115 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 6306 mSDsluCounter, 3065 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6306 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 01:04:46,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6306 Valid, 3219 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 01:04:46,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597604 states. [2023-12-20 01:04:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597604 to 187523. [2023-12-20 01:04:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187523 states, 187522 states have (on average 1.2206781071021) internal successors, (228904), 187522 states have internal predecessors, (228904), 0 states have call successors, (0), 0 states 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 01:04:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187523 states to 187523 states and 228904 transitions. [2023-12-20 01:04:54,931 INFO L78 Accepts]: Start accepts. Automaton has 187523 states and 228904 transitions. Word has length 79 [2023-12-20 01:04:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:04:54,931 INFO L495 AbstractCegarLoop]: Abstraction has 187523 states and 228904 transitions. [2023-12-20 01:04:54,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 31 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 01:04:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 187523 states and 228904 transitions. [2023-12-20 01:04:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 01:04:54,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:04:54,935 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 01:04:54,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 01:04:55,142 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,SelfDestructingSolverStorable26 [2023-12-20 01:04:55,143 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:04:55,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:04:55,143 INFO L85 PathProgramCache]: Analyzing trace with hash -960429663, now seen corresponding path program 1 times [2023-12-20 01:04:55,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:04:55,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278605322] [2023-12-20 01:04:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:55,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:04:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:55,500 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 01:04:55,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:04:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278605322] [2023-12-20 01:04:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278605322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:04:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9123461] [2023-12-20 01:04:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:04:55,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:04:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:04:55,505 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 01:04:55,507 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 01:04:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:04:55,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 01:04:55,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:04:56,380 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 01:04:56,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:04:58,198 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 01:04:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9123461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:04:58,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:04:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 32 [2023-12-20 01:04:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534022796] [2023-12-20 01:04:58,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:04:58,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 01:04:58,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:04:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 01:04:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 01:04:58,200 INFO L87 Difference]: Start difference. First operand 187523 states and 228904 transitions. Second operand has 33 states, 33 states have (on average 6.7272727272727275) internal successors, (222), 32 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:05:15,357 INFO L93 Difference]: Finished difference Result 394343 states and 480293 transitions. [2023-12-20 01:05:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-20 01:05:15,358 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.7272727272727275) internal successors, (222), 32 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-20 01:05:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:05:15,992 INFO L225 Difference]: With dead ends: 394343 [2023-12-20 01:05:15,992 INFO L226 Difference]: Without dead ends: 286457 [2023-12-20 01:05:16,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9940 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=5802, Invalid=23610, Unknown=0, NotChecked=0, Total=29412 [2023-12-20 01:05:16,076 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 4184 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4184 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:05:16,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4184 Valid, 1676 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 01:05:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286457 states. [2023-12-20 01:05:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286457 to 253922. [2023-12-20 01:05:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253922 states, 253921 states have (on average 1.213936618082002) internal successors, (308244), 253921 states have internal predecessors, (308244), 0 states have call successors, (0), 0 states 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 01:05:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253922 states to 253922 states and 308244 transitions. [2023-12-20 01:05:25,974 INFO L78 Accepts]: Start accepts. Automaton has 253922 states and 308244 transitions. Word has length 79 [2023-12-20 01:05:25,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:05:25,974 INFO L495 AbstractCegarLoop]: Abstraction has 253922 states and 308244 transitions. [2023-12-20 01:05:25,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.7272727272727275) internal successors, (222), 32 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 01:05:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 253922 states and 308244 transitions. [2023-12-20 01:05:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-20 01:05:26,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:05:26,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:05:26,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 01:05:26,220 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,SelfDestructingSolverStorable27 [2023-12-20 01:05:26,220 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:05:26,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:05:26,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1505405821, now seen corresponding path program 1 times [2023-12-20 01:05:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:05:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858045823] [2023-12-20 01:05:26,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:05:26,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:05:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:05:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-20 01:05:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:05:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858045823] [2023-12-20 01:05:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858045823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:05:26,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:05:26,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 01:05:26,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518863750] [2023-12-20 01:05:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:05:26,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 01:05:26,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:05:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 01:05:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 01:05:26,252 INFO L87 Difference]: Start difference. First operand 253922 states and 308244 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)