/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 01:45:27,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 01:45:27,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 01:45:27,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 01:45:27,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 01:45:27,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 01:45:27,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 01:45:27,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 01:45:27,845 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 01:45:27,850 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 01:45:27,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 01:45:27,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 01:45:27,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 01:45:27,851 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 01:45:27,852 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 01:45:27,852 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 01:45:27,852 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 01:45:27,852 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 01:45:27,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 01:45:27,853 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 01:45:27,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 01:45:27,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 01:45:27,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 01:45:27,855 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 01:45:27,855 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 01:45:27,855 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 01:45:27,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 01:45:27,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 01:45:27,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 01:45:27,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 01:45:27,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 01:45:27,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 01:45:27,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:45:27,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 01:45:27,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 01:45:27,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 01:45:27,858 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 01:45:27,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 01:45:27,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 01:45:27,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 01:45:27,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 01:45:27,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 01:45:27,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 01:45:27,859 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 01:45:28,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 01:45:28,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 01:45:28,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 01:45:28,103 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 01:45:28,103 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 01:45:28,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2023-12-19 01:45:29,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 01:45:29,576 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 01:45:29,578 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c [2023-12-19 01:45:29,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5b4ba07/3e79a1bbcd424dfba54ee0333f9a79e7/FLAG73649fb92 [2023-12-19 01:45:29,618 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec5b4ba07/3e79a1bbcd424dfba54ee0333f9a79e7 [2023-12-19 01:45:29,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 01:45:29,622 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 01:45:29,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 01:45:29,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 01:45:29,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 01:45:29,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1165e788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29, skipping insertion in model container [2023-12-19 01:45:29,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,664 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 01:45:29,800 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c[2544,2557] [2023-12-19 01:45:29,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:45:29,812 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 01:45:29,827 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c[2544,2557] [2023-12-19 01:45:29,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 01:45:29,838 INFO L206 MainTranslator]: Completed translation [2023-12-19 01:45:29,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29 WrapperNode [2023-12-19 01:45:29,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 01:45:29,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 01:45:29,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 01:45:29,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 01:45:29,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,869 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,887 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 100 [2023-12-19 01:45:29,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 01:45:29,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 01:45:29,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 01:45:29,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 01:45:29,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,903 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]. [2023-12-19 01:45:29,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,906 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 01:45:29,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 01:45:29,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 01:45:29,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 01:45:29,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (1/1) ... [2023-12-19 01:45:29,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 01:45:29,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 01:45:29,947 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) [2023-12-19 01:45:29,952 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 [2023-12-19 01:45:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 01:45:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 01:45:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 01:45:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 01:45:30,031 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 01:45:30,032 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 01:45:30,184 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 01:45:30,212 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 01:45:30,213 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 01:45:30,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:45:30 BoogieIcfgContainer [2023-12-19 01:45:30,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 01:45:30,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 01:45:30,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 01:45:30,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 01:45:30,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 01:45:29" (1/3) ... [2023-12-19 01:45:30,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd3c045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:45:30, skipping insertion in model container [2023-12-19 01:45:30,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 01:45:29" (2/3) ... [2023-12-19 01:45:30,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd3c045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 01:45:30, skipping insertion in model container [2023-12-19 01:45:30,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 01:45:30" (3/3) ... [2023-12-19 01:45:30,224 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2023-12-19 01:45:30,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 01:45:30,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 01:45:30,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 01:45:30,275 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;@6a36d160, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 01:45:30,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 01:45:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-19 01:45:30,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1166319357, now seen corresponding path program 1 times [2023-12-19 01:45:30,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124205299] [2023-12-19 01:45:30,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:30,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:30,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124205299] [2023-12-19 01:45:30,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124205299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:30,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:30,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:30,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307467340] [2023-12-19 01:45:30,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:30,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:30,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:30,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:30,463 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 25 states have internal predecessors, (46), 0 states have call successors, (0), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:30,508 INFO L93 Difference]: Finished difference Result 54 states and 93 transitions. [2023-12-19 01:45:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:30,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-12-19 01:45:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:30,517 INFO L225 Difference]: With dead ends: 54 [2023-12-19 01:45:30,517 INFO L226 Difference]: Without dead ends: 44 [2023-12-19 01:45:30,519 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 [2023-12-19 01:45:30,522 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:30,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 82 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-19 01:45:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2023-12-19 01:45:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 29 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 53 transitions. [2023-12-19 01:45:30,549 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 53 transitions. Word has length 12 [2023-12-19 01:45:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:30,550 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 53 transitions. [2023-12-19 01:45:30,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 53 transitions. [2023-12-19 01:45:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-19 01:45:30,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 01:45:30,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash -486260987, now seen corresponding path program 1 times [2023-12-19 01:45:30,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705619556] [2023-12-19 01:45:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:30,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705619556] [2023-12-19 01:45:30,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705619556] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:30,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:30,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873137425] [2023-12-19 01:45:30,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:30,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:30,600 INFO L87 Difference]: Start difference. First operand 30 states and 53 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:30,629 INFO L93 Difference]: Finished difference Result 73 states and 128 transitions. [2023-12-19 01:45:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:30,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-12-19 01:45:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:30,632 INFO L225 Difference]: With dead ends: 73 [2023-12-19 01:45:30,632 INFO L226 Difference]: Without dead ends: 44 [2023-12-19 01:45:30,633 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 [2023-12-19 01:45:30,635 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 28 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:30,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-19 01:45:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-12-19 01:45:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.7804878048780488) internal successors, (73), 41 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 73 transitions. [2023-12-19 01:45:30,645 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 73 transitions. Word has length 12 [2023-12-19 01:45:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:30,645 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 73 transitions. [2023-12-19 01:45:30,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 73 transitions. [2023-12-19 01:45:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 01:45:30,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 01:45:30,646 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1795947055, now seen corresponding path program 1 times [2023-12-19 01:45:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535423666] [2023-12-19 01:45:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535423666] [2023-12-19 01:45:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535423666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:30,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:30,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:30,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437622459] [2023-12-19 01:45:30,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:30,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:30,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:30,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:30,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:30,741 INFO L87 Difference]: Start difference. First operand 42 states and 73 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:30,753 INFO L93 Difference]: Finished difference Result 68 states and 113 transitions. [2023-12-19 01:45:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-19 01:45:30,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:30,754 INFO L225 Difference]: With dead ends: 68 [2023-12-19 01:45:30,754 INFO L226 Difference]: Without dead ends: 47 [2023-12-19 01:45:30,755 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 [2023-12-19 01:45:30,755 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:30,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 93 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-19 01:45:30,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-12-19 01:45:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.7045454545454546) internal successors, (75), 44 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 75 transitions. [2023-12-19 01:45:30,760 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 75 transitions. Word has length 13 [2023-12-19 01:45:30,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:30,761 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 75 transitions. [2023-12-19 01:45:30,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,761 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 75 transitions. [2023-12-19 01:45:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 01:45:30,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 01:45:30,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2105993231, now seen corresponding path program 1 times [2023-12-19 01:45:30,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621706990] [2023-12-19 01:45:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:30,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621706990] [2023-12-19 01:45:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621706990] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:30,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:30,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635231059] [2023-12-19 01:45:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:30,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:30,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:30,811 INFO L87 Difference]: Start difference. First operand 45 states and 75 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:30,823 INFO L93 Difference]: Finished difference Result 84 states and 140 transitions. [2023-12-19 01:45:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:30,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-19 01:45:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:30,824 INFO L225 Difference]: With dead ends: 84 [2023-12-19 01:45:30,824 INFO L226 Difference]: Without dead ends: 82 [2023-12-19 01:45:30,825 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 [2023-12-19 01:45:30,826 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 25 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:30,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 74 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-19 01:45:30,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 60. [2023-12-19 01:45:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.694915254237288) internal successors, (100), 59 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 100 transitions. [2023-12-19 01:45:30,832 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 100 transitions. Word has length 13 [2023-12-19 01:45:30,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:30,832 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 100 transitions. [2023-12-19 01:45:30,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 100 transitions. [2023-12-19 01:45:30,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 01:45:30,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 01:45:30,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1508915695, now seen corresponding path program 1 times [2023-12-19 01:45:30,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318453548] [2023-12-19 01:45:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:30,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:30,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318453548] [2023-12-19 01:45:30,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318453548] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:30,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:30,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:30,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013353111] [2023-12-19 01:45:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:30,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:30,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:30,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:30,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:30,862 INFO L87 Difference]: Start difference. First operand 60 states and 100 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:30,875 INFO L93 Difference]: Finished difference Result 140 states and 234 transitions. [2023-12-19 01:45:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-19 01:45:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:30,876 INFO L225 Difference]: With dead ends: 140 [2023-12-19 01:45:30,876 INFO L226 Difference]: Without dead ends: 84 [2023-12-19 01:45:30,877 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 [2023-12-19 01:45:30,878 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:30,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 85 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:30,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-19 01:45:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2023-12-19 01:45:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.654320987654321) internal successors, (134), 81 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 134 transitions. [2023-12-19 01:45:30,885 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 134 transitions. Word has length 13 [2023-12-19 01:45:30,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:30,885 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 134 transitions. [2023-12-19 01:45:30,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,886 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 134 transitions. [2023-12-19 01:45:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-19 01:45:30,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 01:45:30,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash 861495706, now seen corresponding path program 1 times [2023-12-19 01:45:30,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281818436] [2023-12-19 01:45:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:30,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:30,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281818436] [2023-12-19 01:45:30,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281818436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:30,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:30,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939938958] [2023-12-19 01:45:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:30,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:30,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:30,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:30,915 INFO L87 Difference]: Start difference. First operand 82 states and 134 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:30,926 INFO L93 Difference]: Finished difference Result 125 states and 201 transitions. [2023-12-19 01:45:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-12-19 01:45:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:30,927 INFO L225 Difference]: With dead ends: 125 [2023-12-19 01:45:30,927 INFO L226 Difference]: Without dead ends: 86 [2023-12-19 01:45:30,928 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 [2023-12-19 01:45:30,929 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 29 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:30,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 89 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-19 01:45:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2023-12-19 01:45:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.6144578313253013) internal successors, (134), 83 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 134 transitions. [2023-12-19 01:45:30,936 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 134 transitions. Word has length 14 [2023-12-19 01:45:30,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:30,936 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 134 transitions. [2023-12-19 01:45:30,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 134 transitions. [2023-12-19 01:45:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-19 01:45:30,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 01:45:30,937 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 468468696, now seen corresponding path program 1 times [2023-12-19 01:45:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876771226] [2023-12-19 01:45:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:30,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:30,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876771226] [2023-12-19 01:45:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876771226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:30,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:30,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:30,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961786247] [2023-12-19 01:45:30,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:30,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:30,962 INFO L87 Difference]: Start difference. First operand 84 states and 134 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:30,976 INFO L93 Difference]: Finished difference Result 236 states and 376 transitions. [2023-12-19 01:45:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:30,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-12-19 01:45:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:30,977 INFO L225 Difference]: With dead ends: 236 [2023-12-19 01:45:30,977 INFO L226 Difference]: Without dead ends: 158 [2023-12-19 01:45:30,978 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 [2023-12-19 01:45:30,978 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:30,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 76 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-19 01:45:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-12-19 01:45:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.5612903225806452) internal successors, (242), 155 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 242 transitions. [2023-12-19 01:45:30,989 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 242 transitions. Word has length 14 [2023-12-19 01:45:30,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:30,989 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 242 transitions. [2023-12-19 01:45:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:30,989 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 242 transitions. [2023-12-19 01:45:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-19 01:45:30,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:30,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:30,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 01:45:30,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:30,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash -211589674, now seen corresponding path program 1 times [2023-12-19 01:45:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:30,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059790134] [2023-12-19 01:45:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:30,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059790134] [2023-12-19 01:45:31,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059790134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134618673] [2023-12-19 01:45:31,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,015 INFO L87 Difference]: Start difference. First operand 156 states and 242 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,026 INFO L93 Difference]: Finished difference Result 192 states and 300 transitions. [2023-12-19 01:45:31,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-12-19 01:45:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,027 INFO L225 Difference]: With dead ends: 192 [2023-12-19 01:45:31,027 INFO L226 Difference]: Without dead ends: 190 [2023-12-19 01:45:31,028 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 [2023-12-19 01:45:31,028 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 22 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 95 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-19 01:45:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 156. [2023-12-19 01:45:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.5354838709677419) internal successors, (238), 155 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) [2023-12-19 01:45:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 238 transitions. [2023-12-19 01:45:31,039 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 238 transitions. Word has length 14 [2023-12-19 01:45:31,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,039 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 238 transitions. [2023-12-19 01:45:31,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 238 transitions. [2023-12-19 01:45:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 01:45:31,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 01:45:31,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1637843014, now seen corresponding path program 1 times [2023-12-19 01:45:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502305654] [2023-12-19 01:45:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502305654] [2023-12-19 01:45:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502305654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113703623] [2023-12-19 01:45:31,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,065 INFO L87 Difference]: Start difference. First operand 156 states and 238 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,107 INFO L93 Difference]: Finished difference Result 276 states and 424 transitions. [2023-12-19 01:45:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-19 01:45:31,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,109 INFO L225 Difference]: With dead ends: 276 [2023-12-19 01:45:31,109 INFO L226 Difference]: Without dead ends: 274 [2023-12-19 01:45:31,109 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 [2023-12-19 01:45:31,110 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 70 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-19 01:45:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 224. [2023-12-19 01:45:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.4977578475336324) internal successors, (334), 223 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 334 transitions. [2023-12-19 01:45:31,133 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 334 transitions. Word has length 15 [2023-12-19 01:45:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,133 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 334 transitions. [2023-12-19 01:45:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 334 transitions. [2023-12-19 01:45:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-19 01:45:31,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 01:45:31,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1977065912, now seen corresponding path program 1 times [2023-12-19 01:45:31,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428911565] [2023-12-19 01:45:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428911565] [2023-12-19 01:45:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428911565] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444102993] [2023-12-19 01:45:31,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,177 INFO L87 Difference]: Start difference. First operand 224 states and 334 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,201 INFO L93 Difference]: Finished difference Result 516 states and 768 transitions. [2023-12-19 01:45:31,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2023-12-19 01:45:31,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,203 INFO L225 Difference]: With dead ends: 516 [2023-12-19 01:45:31,203 INFO L226 Difference]: Without dead ends: 298 [2023-12-19 01:45:31,206 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 [2023-12-19 01:45:31,209 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-19 01:45:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2023-12-19 01:45:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.4440677966101696) internal successors, (426), 295 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 426 transitions. [2023-12-19 01:45:31,234 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 426 transitions. Word has length 15 [2023-12-19 01:45:31,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,235 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 426 transitions. [2023-12-19 01:45:31,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,235 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 426 transitions. [2023-12-19 01:45:31,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 01:45:31,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 01:45:31,241 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,241 INFO L85 PathProgramCache]: Analyzing trace with hash -766258451, now seen corresponding path program 1 times [2023-12-19 01:45:31,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187314525] [2023-12-19 01:45:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187314525] [2023-12-19 01:45:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187314525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116713247] [2023-12-19 01:45:31,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,289 INFO L87 Difference]: Start difference. First operand 296 states and 426 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,314 INFO L93 Difference]: Finished difference Result 452 states and 648 transitions. [2023-12-19 01:45:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-19 01:45:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,318 INFO L225 Difference]: With dead ends: 452 [2023-12-19 01:45:31,318 INFO L226 Difference]: Without dead ends: 310 [2023-12-19 01:45:31,318 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 [2023-12-19 01:45:31,319 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 27 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 81 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-12-19 01:45:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 308. [2023-12-19 01:45:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.4136807817589576) internal successors, (434), 307 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 434 transitions. [2023-12-19 01:45:31,331 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 434 transitions. Word has length 16 [2023-12-19 01:45:31,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,332 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 434 transitions. [2023-12-19 01:45:31,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,332 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 434 transitions. [2023-12-19 01:45:31,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 01:45:31,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 01:45:31,333 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1159285461, now seen corresponding path program 1 times [2023-12-19 01:45:31,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919455923] [2023-12-19 01:45:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919455923] [2023-12-19 01:45:31,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919455923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072317443] [2023-12-19 01:45:31,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,387 INFO L87 Difference]: Start difference. First operand 308 states and 434 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,411 INFO L93 Difference]: Finished difference Result 520 states and 732 transitions. [2023-12-19 01:45:31,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-19 01:45:31,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,416 INFO L225 Difference]: With dead ends: 520 [2023-12-19 01:45:31,420 INFO L226 Difference]: Without dead ends: 518 [2023-12-19 01:45:31,421 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 [2023-12-19 01:45:31,422 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 68 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2023-12-19 01:45:31,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 452. [2023-12-19 01:45:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 1.370288248337029) internal successors, (618), 451 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 618 transitions. [2023-12-19 01:45:31,436 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 618 transitions. Word has length 16 [2023-12-19 01:45:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,437 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 618 transitions. [2023-12-19 01:45:31,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 618 transitions. [2023-12-19 01:45:31,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 01:45:31,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 01:45:31,438 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash -479227091, now seen corresponding path program 1 times [2023-12-19 01:45:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721127998] [2023-12-19 01:45:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721127998] [2023-12-19 01:45:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721127998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311840780] [2023-12-19 01:45:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,475 INFO L87 Difference]: Start difference. First operand 452 states and 618 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,500 INFO L93 Difference]: Finished difference Result 1016 states and 1372 transitions. [2023-12-19 01:45:31,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-19 01:45:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,502 INFO L225 Difference]: With dead ends: 1016 [2023-12-19 01:45:31,502 INFO L226 Difference]: Without dead ends: 582 [2023-12-19 01:45:31,503 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 [2023-12-19 01:45:31,504 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 24 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 88 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-12-19 01:45:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 580. [2023-12-19 01:45:31,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.302245250431779) internal successors, (754), 579 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 754 transitions. [2023-12-19 01:45:31,524 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 754 transitions. Word has length 16 [2023-12-19 01:45:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,524 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 754 transitions. [2023-12-19 01:45:31,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 754 transitions. [2023-12-19 01:45:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 01:45:31,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 01:45:31,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1577894915, now seen corresponding path program 1 times [2023-12-19 01:45:31,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732060518] [2023-12-19 01:45:31,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732060518] [2023-12-19 01:45:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732060518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263255225] [2023-12-19 01:45:31,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,555 INFO L87 Difference]: Start difference. First operand 580 states and 754 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,579 INFO L93 Difference]: Finished difference Result 872 states and 1124 transitions. [2023-12-19 01:45:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-19 01:45:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,582 INFO L225 Difference]: With dead ends: 872 [2023-12-19 01:45:31,582 INFO L226 Difference]: Without dead ends: 598 [2023-12-19 01:45:31,582 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 [2023-12-19 01:45:31,583 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 77 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-12-19 01:45:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 596. [2023-12-19 01:45:31,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 595 states have (on average 1.2672268907563025) internal successors, (754), 595 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 754 transitions. [2023-12-19 01:45:31,619 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 754 transitions. Word has length 17 [2023-12-19 01:45:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,619 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 754 transitions. [2023-12-19 01:45:31,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 754 transitions. [2023-12-19 01:45:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 01:45:31,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 01:45:31,620 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1970921925, now seen corresponding path program 1 times [2023-12-19 01:45:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367567313] [2023-12-19 01:45:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367567313] [2023-12-19 01:45:31,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367567313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265142113] [2023-12-19 01:45:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,657 INFO L87 Difference]: Start difference. First operand 596 states and 754 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,685 INFO L93 Difference]: Finished difference Result 966 states and 1203 transitions. [2023-12-19 01:45:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-19 01:45:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,688 INFO L225 Difference]: With dead ends: 966 [2023-12-19 01:45:31,688 INFO L226 Difference]: Without dead ends: 964 [2023-12-19 01:45:31,690 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 [2023-12-19 01:45:31,691 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-12-19 01:45:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 900. [2023-12-19 01:45:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 1.2302558398220245) internal successors, (1106), 899 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1106 transitions. [2023-12-19 01:45:31,718 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1106 transitions. Word has length 17 [2023-12-19 01:45:31,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,719 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1106 transitions. [2023-12-19 01:45:31,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1106 transitions. [2023-12-19 01:45:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-19 01:45:31,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 01:45:31,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 01:45:31,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 01:45:31,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 01:45:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1290863555, now seen corresponding path program 1 times [2023-12-19 01:45:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 01:45:31,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652521708] [2023-12-19 01:45:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 01:45:31,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 01:45:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 01:45:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 01:45:31,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 01:45:31,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652521708] [2023-12-19 01:45:31,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652521708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 01:45:31,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 01:45:31,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 01:45:31,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061119348] [2023-12-19 01:45:31,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 01:45:31,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 01:45:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 01:45:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 01:45:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 01:45:31,742 INFO L87 Difference]: Start difference. First operand 900 states and 1106 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 01:45:31,779 INFO L93 Difference]: Finished difference Result 1988 states and 2386 transitions. [2023-12-19 01:45:31,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 01:45:31,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-19 01:45:31,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 01:45:31,779 INFO L225 Difference]: With dead ends: 1988 [2023-12-19 01:45:31,779 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 01:45:31,780 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 [2023-12-19 01:45:31,781 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 01:45:31,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 01:45:31,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 01:45:31,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 01:45:31,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 01:45:31,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2023-12-19 01:45:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 01:45:31,782 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 01:45:31,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 01:45:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 01:45:31,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 01:45:31,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 01:45:31,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 01:45:31,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 6 109) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L105(lines 7 109) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,794 INFO L899 garLoopResultBuilder]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L90(line 90) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 107) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L902 garLoopResultBuilder]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L100(line 100) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 7 109) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,795 INFO L899 garLoopResultBuilder]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2023-12-19 01:45:31,797 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 01:45:31,799 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 01:45:31,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 01:45:31 BoogieIcfgContainer [2023-12-19 01:45:31,805 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 01:45:31,806 INFO L158 Benchmark]: Toolchain (without parser) took 2183.79ms. Allocated memory is still 308.3MB. Free memory was 251.7MB in the beginning and 215.2MB in the end (delta: 36.5MB). Peak memory consumption was 37.1MB. Max. memory is 8.0GB. [2023-12-19 01:45:31,806 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 01:45:31,806 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.59ms. Allocated memory is still 308.3MB. Free memory was 251.7MB in the beginning and 240.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-19 01:45:31,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.64ms. Allocated memory is still 308.3MB. Free memory was 240.7MB in the beginning and 239.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 01:45:31,806 INFO L158 Benchmark]: Boogie Preprocessor took 23.21ms. Allocated memory is still 308.3MB. Free memory was 239.1MB in the beginning and 237.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 01:45:31,806 INFO L158 Benchmark]: RCFGBuilder took 301.86ms. Allocated memory is still 308.3MB. Free memory was 237.0MB in the beginning and 223.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 01:45:31,807 INFO L158 Benchmark]: TraceAbstraction took 1587.45ms. Allocated memory is still 308.3MB. Free memory was 223.4MB in the beginning and 215.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2023-12-19 01:45:31,807 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 188.7MB. Free memory is still 134.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.59ms. Allocated memory is still 308.3MB. Free memory was 251.7MB in the beginning and 240.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.64ms. Allocated memory is still 308.3MB. Free memory was 240.7MB in the beginning and 239.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.21ms. Allocated memory is still 308.3MB. Free memory was 239.1MB in the beginning and 237.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 301.86ms. Allocated memory is still 308.3MB. Free memory was 237.0MB in the beginning and 223.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1587.45ms. Allocated memory is still 308.3MB. Free memory was 223.4MB in the beginning and 215.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.8MB. 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 - PositiveResult [Line: 107]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 389 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 389 mSDsluCounter, 1301 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 509 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 792 mSDtfsCounter, 105 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=900occurred in iteration=15, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 66 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 446 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-19 01:45:31,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...