/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:58:48,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:58:48,503 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:58:48,506 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:58:48,506 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:58:48,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:58:48,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:58:48,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:58:48,530 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:58:48,530 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:58:48,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:58:48,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:58:48,531 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:58:48,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:58:48,531 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:58:48,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:58:48,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:58:48,532 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:58:48,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:58:48,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:58:48,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:58:48,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:58:48,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:58:48,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:58:48,536 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:58:48,536 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:58:48,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:58:48,537 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:58:48,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:58:48,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:58:48,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:58:48,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:58:48,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:58:48,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:58:48,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:58:48,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:58:48,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:58:48,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:58:48,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:58:48,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:58:48,540 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:58:48,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:58:48,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:58:48,544 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:58:48,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:58:48,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:58:48,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:58:48,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:58:48,765 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:58:48,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2023-12-16 01:58:49,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:58:50,088 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:58:50,089 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c [2023-12-16 01:58:50,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4822fc0cd/f54af7cfe7bc472c931bcd979f0204ae/FLAG335f6c749 [2023-12-16 01:58:50,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4822fc0cd/f54af7cfe7bc472c931bcd979f0204ae [2023-12-16 01:58:50,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:58:50,131 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:58:50,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:58:50,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:58:50,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:58:50,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:58:50" (1/1) ... [2023-12-16 01:58:50,149 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@183f7a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:50, skipping insertion in model container [2023-12-16 01:58:50,149 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:58:50" (1/1) ... [2023-12-16 01:58:50,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:58:50,465 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c[6468,6481] [2023-12-16 01:58:51,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:58:51,095 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:58:51,114 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label27.c[6468,6481] [2023-12-16 01:58:51,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:58:51,414 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:58:51,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51 WrapperNode [2023-12-16 01:58:51,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:58:51,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:58:51,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:58:51,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:58:51,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:51,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:51,773 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-16 01:58:51,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:58:51,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:58:51,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:58:51,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:58:51,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:51,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:51,845 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,129 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]. [2023-12-16 01:58:52,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:58:52,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:58:52,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:58:52,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:58:52,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (1/1) ... [2023-12-16 01:58:52,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:58:52,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:58:52,465 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) [2023-12-16 01:58:52,476 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 [2023-12-16 01:58:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:58:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:58:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:58:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:58:52,619 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:58:52,620 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:58:56,339 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:58:56,384 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:58:56,384 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:58:56,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:58:56 BoogieIcfgContainer [2023-12-16 01:58:56,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:58:56,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:58:56,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:58:56,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:58:56,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:58:50" (1/3) ... [2023-12-16 01:58:56,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cea57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:58:56, skipping insertion in model container [2023-12-16 01:58:56,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:58:51" (2/3) ... [2023-12-16 01:58:56,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70cea57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:58:56, skipping insertion in model container [2023-12-16 01:58:56,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:58:56" (3/3) ... [2023-12-16 01:58:56,390 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label27.c [2023-12-16 01:58:56,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:58:56,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:58:56,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:58:56,448 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;@397dff15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:58:56,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:58:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:58:56,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 01:58:56,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:58:56,459 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] [2023-12-16 01:58:56,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:58:56,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:58:56,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1017894885, now seen corresponding path program 1 times [2023-12-16 01:58:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:58:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030192041] [2023-12-16 01:58:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:58:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:58:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:58:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:58:56,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:58:56,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030192041] [2023-12-16 01:58:56,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030192041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:58:56,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:58:56,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:58:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606658054] [2023-12-16 01:58:56,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:58:56,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:58:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:58:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:58:56,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:58:56,601 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:58:56,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:58:56,662 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-16 01:58:56,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:58:56,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-16 01:58:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:58:56,681 INFO L225 Difference]: With dead ends: 2071 [2023-12-16 01:58:56,682 INFO L226 Difference]: Without dead ends: 1034 [2023-12-16 01:58:56,690 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 [2023-12-16 01:58:56,692 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:58:56,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:58:56,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-16 01:58:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-16 01:58:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:58:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-16 01:58:56,765 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 44 [2023-12-16 01:58:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:58:56,765 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-16 01:58:56,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:58:56,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-16 01:58:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 01:58:56,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:58:56,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:58:56,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:58:56,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:58:56,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:58:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1786485728, now seen corresponding path program 1 times [2023-12-16 01:58:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:58:56,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412515703] [2023-12-16 01:58:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:58:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:58:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:58:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:58:56,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:58:56,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412515703] [2023-12-16 01:58:56,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412515703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:58:56,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:58:56,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:58:56,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324963178] [2023-12-16 01:58:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:58:56,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:58:56,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:58:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:58:56,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:58:56,922 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:00,847 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-12-16 01:59:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:00,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-16 01:59:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:00,855 INFO L225 Difference]: With dead ends: 3015 [2023-12-16 01:59:00,856 INFO L226 Difference]: Without dead ends: 1982 [2023-12-16 01:59:00,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:00,859 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1010 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:00,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-16 01:59:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-16 01:59:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-12-16 01:59:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-12-16 01:59:00,895 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 44 [2023-12-16 01:59:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:00,895 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-12-16 01:59:00,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-12-16 01:59:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-16 01:59:00,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:00,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:59:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:59:00,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:00,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2110678795, now seen corresponding path program 1 times [2023-12-16 01:59:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340487518] [2023-12-16 01:59:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:59:01,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340487518] [2023-12-16 01:59:01,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340487518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:01,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:01,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:59:01,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537585886] [2023-12-16 01:59:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:01,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:01,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:01,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:01,109 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:04,114 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-12-16 01:59:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:04,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-16 01:59:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:04,126 INFO L225 Difference]: With dead ends: 5455 [2023-12-16 01:59:04,127 INFO L226 Difference]: Without dead ends: 3527 [2023-12-16 01:59:04,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:04,131 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:04,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 01:59:04,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-12-16 01:59:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-12-16 01:59:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-12-16 01:59:04,205 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 109 [2023-12-16 01:59:04,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:04,207 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-12-16 01:59:04,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-12-16 01:59:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-16 01:59:04,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:04,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 01:59:04,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:59:04,209 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:04,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1023593318, now seen corresponding path program 1 times [2023-12-16 01:59:04,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:04,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148153972] [2023-12-16 01:59:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:04,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:59:04,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:04,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148153972] [2023-12-16 01:59:04,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148153972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:04,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:04,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:59:04,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814165354] [2023-12-16 01:59:04,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:04,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:04,307 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:07,142 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2023-12-16 01:59:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:07,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-16 01:59:07,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:07,160 INFO L225 Difference]: With dead ends: 10231 [2023-12-16 01:59:07,160 INFO L226 Difference]: Without dead ends: 6707 [2023-12-16 01:59:07,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:07,165 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:07,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 01:59:07,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2023-12-16 01:59:07,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2023-12-16 01:59:07,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-12-16 01:59:07,252 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 115 [2023-12-16 01:59:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:07,252 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-12-16 01:59:07,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-12-16 01:59:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-16 01:59:07,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:07,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:07,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:59:07,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:07,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1522333595, now seen corresponding path program 1 times [2023-12-16 01:59:07,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:07,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487311274] [2023-12-16 01:59:07,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:59:07,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:07,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487311274] [2023-12-16 01:59:07,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487311274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:07,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:07,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:59:07,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284597888] [2023-12-16 01:59:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:07,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:07,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:07,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:07,390 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:10,635 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-12-16 01:59:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2023-12-16 01:59:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:10,663 INFO L225 Difference]: With dead ends: 17442 [2023-12-16 01:59:10,663 INFO L226 Difference]: Without dead ends: 10744 [2023-12-16 01:59:10,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:10,672 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:10,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 01:59:10,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-12-16 01:59:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-12-16 01:59:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-12-16 01:59:10,887 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 145 [2023-12-16 01:59:10,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:10,889 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-12-16 01:59:10,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-12-16 01:59:10,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-16 01:59:10,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:10,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:10,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:59:10,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:10,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash -249489538, now seen corresponding path program 1 times [2023-12-16 01:59:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:10,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878363656] [2023-12-16 01:59:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:10,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:59:11,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:11,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878363656] [2023-12-16 01:59:11,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878363656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:11,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:11,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:59:11,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744447915] [2023-12-16 01:59:11,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:11,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:11,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:11,159 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:13,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:13,732 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-12-16 01:59:13,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:13,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2023-12-16 01:59:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:13,755 INFO L225 Difference]: With dead ends: 20548 [2023-12-16 01:59:13,756 INFO L226 Difference]: Without dead ends: 10668 [2023-12-16 01:59:13,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:13,766 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:13,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 01:59:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-12-16 01:59:13,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-12-16 01:59:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-12-16 01:59:13,923 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 155 [2023-12-16 01:59:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:13,925 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-12-16 01:59:13,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-12-16 01:59:13,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-16 01:59:13,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:13,926 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:13,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:59:13,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:13,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:13,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1836590104, now seen corresponding path program 1 times [2023-12-16 01:59:13,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:13,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940069389] [2023-12-16 01:59:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:13,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:59:14,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:14,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940069389] [2023-12-16 01:59:14,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940069389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:14,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:14,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:59:14,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743109490] [2023-12-16 01:59:14,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:14,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:14,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:14,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:14,014 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:17,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:17,175 INFO L93 Difference]: Finished difference Result 29990 states and 41154 transitions. [2023-12-16 01:59:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-16 01:59:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:17,229 INFO L225 Difference]: With dead ends: 29990 [2023-12-16 01:59:17,229 INFO L226 Difference]: Without dead ends: 20110 [2023-12-16 01:59:17,240 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 [2023-12-16 01:59:17,243 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 892 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:17,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1985 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 01:59:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2023-12-16 01:59:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 19313. [2023-12-16 01:59:17,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19313 states, 19312 states have (on average 1.2808616404308202) internal successors, (24736), 19312 states have internal predecessors, (24736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 24736 transitions. [2023-12-16 01:59:17,445 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 24736 transitions. Word has length 169 [2023-12-16 01:59:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:17,445 INFO L495 AbstractCegarLoop]: Abstraction has 19313 states and 24736 transitions. [2023-12-16 01:59:17,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 24736 transitions. [2023-12-16 01:59:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-16 01:59:17,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:17,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:17,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:59:17,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:17,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -23937511, now seen corresponding path program 1 times [2023-12-16 01:59:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290769175] [2023-12-16 01:59:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:17,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-16 01:59:17,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:17,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290769175] [2023-12-16 01:59:17,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290769175] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:17,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:17,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:59:17,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537283934] [2023-12-16 01:59:17,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:17,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:17,676 INFO L87 Difference]: Start difference. First operand 19313 states and 24736 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:20,617 INFO L93 Difference]: Finished difference Result 44941 states and 56954 transitions. [2023-12-16 01:59:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:20,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 256 [2023-12-16 01:59:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:20,660 INFO L225 Difference]: With dead ends: 44941 [2023-12-16 01:59:20,661 INFO L226 Difference]: Without dead ends: 25629 [2023-12-16 01:59:20,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:20,676 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 726 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:20,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1189 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-16 01:59:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25629 states. [2023-12-16 01:59:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25629 to 25621. [2023-12-16 01:59:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25621 states, 25620 states have (on average 1.2324746291959408) internal successors, (31576), 25620 states have internal predecessors, (31576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:20,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 31576 transitions. [2023-12-16 01:59:20,944 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 31576 transitions. Word has length 256 [2023-12-16 01:59:20,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:20,945 INFO L495 AbstractCegarLoop]: Abstraction has 25621 states and 31576 transitions. [2023-12-16 01:59:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 31576 transitions. [2023-12-16 01:59:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-12-16 01:59:20,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:20,950 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:20,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:59:20,950 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:20,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1248951905, now seen corresponding path program 1 times [2023-12-16 01:59:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:20,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464129792] [2023-12-16 01:59:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:59:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464129792] [2023-12-16 01:59:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464129792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:21,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:21,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:59:21,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517602943] [2023-12-16 01:59:21,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:21,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:21,098 INFO L87 Difference]: Start difference. First operand 25621 states and 31576 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:24,241 INFO L93 Difference]: Finished difference Result 72508 states and 89960 transitions. [2023-12-16 01:59:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2023-12-16 01:59:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:24,300 INFO L225 Difference]: With dead ends: 72508 [2023-12-16 01:59:24,300 INFO L226 Difference]: Without dead ends: 47675 [2023-12-16 01:59:24,319 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 [2023-12-16 01:59:24,321 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 824 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:24,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 898 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-16 01:59:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47675 states. [2023-12-16 01:59:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47675 to 46090. [2023-12-16 01:59:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46090 states, 46089 states have (on average 1.1848597279177244) internal successors, (54609), 46089 states have internal predecessors, (54609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46090 states to 46090 states and 54609 transitions. [2023-12-16 01:59:24,752 INFO L78 Accepts]: Start accepts. Automaton has 46090 states and 54609 transitions. Word has length 271 [2023-12-16 01:59:24,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:24,754 INFO L495 AbstractCegarLoop]: Abstraction has 46090 states and 54609 transitions. [2023-12-16 01:59:24,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 46090 states and 54609 transitions. [2023-12-16 01:59:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-16 01:59:24,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:24,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:24,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:59:24,759 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:24,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1901814472, now seen corresponding path program 1 times [2023-12-16 01:59:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:24,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420133910] [2023-12-16 01:59:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:24,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 214 proven. 113 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-16 01:59:25,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420133910] [2023-12-16 01:59:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420133910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:59:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821098154] [2023-12-16 01:59:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:25,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:59:25,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:59:25,887 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) [2023-12-16 01:59:25,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:59:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:26,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:59:26,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:59:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-16 01:59:26,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:59:26,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821098154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:26,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:59:26,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-16 01:59:26,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167501453] [2023-12-16 01:59:26,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:26,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:26,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:26,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:26,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:59:26,152 INFO L87 Difference]: Start difference. First operand 46090 states and 54609 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:29,044 INFO L93 Difference]: Finished difference Result 91381 states and 108415 transitions. [2023-12-16 01:59:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:29,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 350 [2023-12-16 01:59:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:29,091 INFO L225 Difference]: With dead ends: 91381 [2023-12-16 01:59:29,092 INFO L226 Difference]: Without dead ends: 46079 [2023-12-16 01:59:29,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-16 01:59:29,108 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1076 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:29,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 820 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 01:59:29,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46079 states. [2023-12-16 01:59:29,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46079 to 46076. [2023-12-16 01:59:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46076 states, 46075 states have (on average 1.1360607704829082) internal successors, (52344), 46075 states have internal predecessors, (52344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46076 states to 46076 states and 52344 transitions. [2023-12-16 01:59:29,481 INFO L78 Accepts]: Start accepts. Automaton has 46076 states and 52344 transitions. Word has length 350 [2023-12-16 01:59:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:29,481 INFO L495 AbstractCegarLoop]: Abstraction has 46076 states and 52344 transitions. [2023-12-16 01:59:29,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:29,481 INFO L276 IsEmpty]: Start isEmpty. Operand 46076 states and 52344 transitions. [2023-12-16 01:59:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2023-12-16 01:59:29,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:29,486 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:29,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 01:59:29,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 01:59:29,693 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:29,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:29,694 INFO L85 PathProgramCache]: Analyzing trace with hash -604995767, now seen corresponding path program 1 times [2023-12-16 01:59:29,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:29,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437949495] [2023-12-16 01:59:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-16 01:59:29,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437949495] [2023-12-16 01:59:29,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437949495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:29,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:29,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:59:29,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150552097] [2023-12-16 01:59:29,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:29,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:29,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:29,900 INFO L87 Difference]: Start difference. First operand 46076 states and 52344 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:33,352 INFO L93 Difference]: Finished difference Result 101585 states and 116819 transitions. [2023-12-16 01:59:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 359 [2023-12-16 01:59:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:33,425 INFO L225 Difference]: With dead ends: 101585 [2023-12-16 01:59:33,425 INFO L226 Difference]: Without dead ends: 56297 [2023-12-16 01:59:33,463 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 [2023-12-16 01:59:33,464 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 1110 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:33,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1522 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 01:59:33,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56297 states. [2023-12-16 01:59:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56297 to 56296. [2023-12-16 01:59:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56296 states, 56295 states have (on average 1.1241673328004262) internal successors, (63285), 56295 states have internal predecessors, (63285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56296 states to 56296 states and 63285 transitions. [2023-12-16 01:59:34,047 INFO L78 Accepts]: Start accepts. Automaton has 56296 states and 63285 transitions. Word has length 359 [2023-12-16 01:59:34,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:34,047 INFO L495 AbstractCegarLoop]: Abstraction has 56296 states and 63285 transitions. [2023-12-16 01:59:34,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:34,048 INFO L276 IsEmpty]: Start isEmpty. Operand 56296 states and 63285 transitions. [2023-12-16 01:59:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2023-12-16 01:59:34,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:34,054 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:34,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:59:34,055 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:34,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:34,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1227654167, now seen corresponding path program 1 times [2023-12-16 01:59:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:34,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812346978] [2023-12-16 01:59:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-16 01:59:34,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:34,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812346978] [2023-12-16 01:59:34,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812346978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:34,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:34,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:59:34,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784530190] [2023-12-16 01:59:34,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:34,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:59:34,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:34,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:59:34,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:59:34,430 INFO L87 Difference]: Start difference. First operand 56296 states and 63285 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:40,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:40,455 INFO L93 Difference]: Finished difference Result 141881 states and 159542 transitions. [2023-12-16 01:59:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:59:40,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 392 [2023-12-16 01:59:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:40,554 INFO L225 Difference]: With dead ends: 141881 [2023-12-16 01:59:40,554 INFO L226 Difference]: Without dead ends: 86373 [2023-12-16 01:59:40,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:59:40,581 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 1677 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 6623 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 7552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 6623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:40,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 916 Invalid, 7552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 6623 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-16 01:59:40,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86373 states. [2023-12-16 01:59:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86373 to 68113. [2023-12-16 01:59:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68113 states, 68112 states have (on average 1.1126086445853887) internal successors, (75782), 68112 states have internal predecessors, (75782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68113 states to 68113 states and 75782 transitions. [2023-12-16 01:59:41,456 INFO L78 Accepts]: Start accepts. Automaton has 68113 states and 75782 transitions. Word has length 392 [2023-12-16 01:59:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:41,457 INFO L495 AbstractCegarLoop]: Abstraction has 68113 states and 75782 transitions. [2023-12-16 01:59:41,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:41,457 INFO L276 IsEmpty]: Start isEmpty. Operand 68113 states and 75782 transitions. [2023-12-16 01:59:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-12-16 01:59:41,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:41,477 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:41,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:59:41,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:41,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2106809376, now seen corresponding path program 1 times [2023-12-16 01:59:41,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:41,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353716779] [2023-12-16 01:59:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:41,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-16 01:59:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353716779] [2023-12-16 01:59:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353716779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:41,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:59:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613688383] [2023-12-16 01:59:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:41,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:41,960 INFO L87 Difference]: Start difference. First operand 68113 states and 75782 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:59:45,527 INFO L93 Difference]: Finished difference Result 159832 states and 178093 transitions. [2023-12-16 01:59:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:45,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 405 [2023-12-16 01:59:45,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:59:45,643 INFO L225 Difference]: With dead ends: 159832 [2023-12-16 01:59:45,644 INFO L226 Difference]: Without dead ends: 92507 [2023-12-16 01:59:45,679 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 [2023-12-16 01:59:45,679 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 830 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2396 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 2396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:45,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 781 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 2396 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-16 01:59:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92507 states. [2023-12-16 01:59:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92507 to 90919. [2023-12-16 01:59:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90919 states, 90918 states have (on average 1.098715325898062) internal successors, (99893), 90918 states have internal predecessors, (99893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90919 states to 90919 states and 99893 transitions. [2023-12-16 01:59:46,828 INFO L78 Accepts]: Start accepts. Automaton has 90919 states and 99893 transitions. Word has length 405 [2023-12-16 01:59:46,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:59:46,829 INFO L495 AbstractCegarLoop]: Abstraction has 90919 states and 99893 transitions. [2023-12-16 01:59:46,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:59:46,829 INFO L276 IsEmpty]: Start isEmpty. Operand 90919 states and 99893 transitions. [2023-12-16 01:59:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-16 01:59:46,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:59:46,836 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:59:46,836 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:59:46,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:59:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1538354151, now seen corresponding path program 1 times [2023-12-16 01:59:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:59:46,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913703474] [2023-12-16 01:59:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:59:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:59:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:59:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 365 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-16 01:59:47,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:59:47,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913703474] [2023-12-16 01:59:47,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913703474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:59:47,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:59:47,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:59:47,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804713672] [2023-12-16 01:59:47,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:59:47,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:59:47,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:59:47,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:59:47,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:47,321 INFO L87 Difference]: Start difference. First operand 90919 states and 99893 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 01:59:49,728 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:59:49,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:59:49,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:59:49,731 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 766 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2141 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:59:49,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 689 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2141 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 01:59:49,732 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:59:49,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:59:49,733 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (90919states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (75675 states constructed, input type IntersectNwa). [2023-12-16 01:59:49,736 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:59:49,737 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:59:49,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:59:49 BoogieIcfgContainer [2023-12-16 01:59:49,738 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:59:49,739 INFO L158 Benchmark]: Toolchain (without parser) took 59607.47ms. Allocated memory was 224.4MB in the beginning and 2.5GB in the end (delta: 2.2GB). Free memory was 154.3MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 951.2MB. Max. memory is 8.0GB. [2023-12-16 01:59:49,739 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:59:49,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1283.37ms. Allocated memory was 224.4MB in the beginning and 300.9MB in the end (delta: 76.5MB). Free memory was 154.1MB in the beginning and 91.5MB in the end (delta: 62.6MB). Peak memory consumption was 140.2MB. Max. memory is 8.0GB. [2023-12-16 01:59:49,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 356.56ms. Allocated memory is still 300.9MB. Free memory was 91.5MB in the beginning and 130.0MB in the end (delta: -38.6MB). Peak memory consumption was 21.7MB. Max. memory is 8.0GB. [2023-12-16 01:59:49,739 INFO L158 Benchmark]: Boogie Preprocessor took 668.12ms. Allocated memory was 300.9MB in the beginning and 601.9MB in the end (delta: 300.9MB). Free memory was 130.0MB in the beginning and 353.7MB in the end (delta: -223.7MB). Peak memory consumption was 108.2MB. Max. memory is 8.0GB. [2023-12-16 01:59:49,740 INFO L158 Benchmark]: RCFGBuilder took 3941.29ms. Allocated memory is still 601.9MB. Free memory was 353.2MB in the beginning and 227.3MB in the end (delta: 125.9MB). Peak memory consumption was 181.5MB. Max. memory is 8.0GB. [2023-12-16 01:59:49,740 INFO L158 Benchmark]: TraceAbstraction took 53352.17ms. Allocated memory was 601.9MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 226.3MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 644.3MB. Max. memory is 8.0GB. [2023-12-16 01:59:49,741 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 174.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1283.37ms. Allocated memory was 224.4MB in the beginning and 300.9MB in the end (delta: 76.5MB). Free memory was 154.1MB in the beginning and 91.5MB in the end (delta: 62.6MB). Peak memory consumption was 140.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 356.56ms. Allocated memory is still 300.9MB. Free memory was 91.5MB in the beginning and 130.0MB in the end (delta: -38.6MB). Peak memory consumption was 21.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 668.12ms. Allocated memory was 300.9MB in the beginning and 601.9MB in the end (delta: 300.9MB). Free memory was 130.0MB in the beginning and 353.7MB in the end (delta: -223.7MB). Peak memory consumption was 108.2MB. Max. memory is 8.0GB. * RCFGBuilder took 3941.29ms. Allocated memory is still 601.9MB. Free memory was 353.2MB in the beginning and 227.3MB in the end (delta: 125.9MB). Peak memory consumption was 181.5MB. Max. memory is 8.0GB. * TraceAbstraction took 53352.17ms. Allocated memory was 601.9MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 226.3MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 644.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 157). Cancelled while NwaCegarLoop was constructing difference of abstraction (90919states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (75675 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.3s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 44.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12328 SdHoareTripleChecker+Valid, 39.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12328 mSDsluCounter, 15019 SdHoareTripleChecker+Invalid, 33.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1694 mSDsCounter, 8358 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37125 IncrementalHoareTripleChecker+Invalid, 45483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8358 mSolverCounterUnsat, 13325 mSDtfsCounter, 37125 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90919occurred in iteration=13, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 22381 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 3589 NumberOfCodeBlocks, 3589 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3574 ConstructedInterpolants, 0 QuantifiedInterpolants, 10523 SizeOfPredicates, 0 NumberOfNonLiveVariables, 487 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 3070/3183 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown