/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/bitvector/interleave_bits.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 21:53:37,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 21:53:37,422 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 21:53:37,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 21:53:37,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 21:53:37,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 21:53:37,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 21:53:37,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 21:53:37,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 21:53:37,450 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 21:53:37,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 21:53:37,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 21:53:37,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 21:53:37,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 21:53:37,452 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 21:53:37,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 21:53:37,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 21:53:37,452 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 21:53:37,453 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 21:53:37,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 21:53:37,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 21:53:37,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 21:53:37,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 21:53:37,454 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 21:53:37,454 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 21:53:37,454 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 21:53:37,454 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 21:53:37,454 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 21:53:37,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 21:53:37,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 21:53:37,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 21:53:37,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 21:53:37,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 21:53:37,456 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 21:53:37,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 21:53:37,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 21:53:37,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 21:53:37,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 21:53:37,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 21:53:37,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 21:53:37,652 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 21:53:37,652 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 21:53:37,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/interleave_bits.i [2023-12-18 21:53:38,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 21:53:38,731 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 21:53:38,731 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i [2023-12-18 21:53:38,736 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7641d78/a85c697555974239b271dd830d02c400/FLAG8c949c03e [2023-12-18 21:53:38,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7641d78/a85c697555974239b271dd830d02c400 [2023-12-18 21:53:38,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 21:53:38,750 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 21:53:38,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 21:53:38,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 21:53:38,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 21:53:38,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fdb520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38, skipping insertion in model container [2023-12-18 21:53:38,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 21:53:38,883 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188] [2023-12-18 21:53:38,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 21:53:38,912 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 21:53:38,919 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/interleave_bits.i[1175,1188] [2023-12-18 21:53:38,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 21:53:38,935 INFO L206 MainTranslator]: Completed translation [2023-12-18 21:53:38,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38 WrapperNode [2023-12-18 21:53:38,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 21:53:38,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 21:53:38,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 21:53:38,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 21:53:38,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,964 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 217 [2023-12-18 21:53:38,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 21:53:38,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 21:53:38,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 21:53:38,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 21:53:38,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,989 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]. [2023-12-18 21:53:38,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:38,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 21:53:39,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 21:53:39,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 21:53:39,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 21:53:39,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (1/1) ... [2023-12-18 21:53:39,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 21:53:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:39,049 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) [2023-12-18 21:53:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 21:53:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 21:53:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 21:53:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 21:53:39,064 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 [2023-12-18 21:53:39,131 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 21:53:39,132 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 21:53:42,174 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 21:53:42,191 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 21:53:42,191 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-18 21:53:42,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:53:42 BoogieIcfgContainer [2023-12-18 21:53:42,191 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 21:53:42,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 21:53:42,193 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 21:53:42,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 21:53:42,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:53:38" (1/3) ... [2023-12-18 21:53:42,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f2e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:53:42, skipping insertion in model container [2023-12-18 21:53:42,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:53:38" (2/3) ... [2023-12-18 21:53:42,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f2e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:53:42, skipping insertion in model container [2023-12-18 21:53:42,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:53:42" (3/3) ... [2023-12-18 21:53:42,196 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i [2023-12-18 21:53:42,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 21:53:42,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 21:53:42,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 21:53:42,238 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;@56fa709b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 21:53:42,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 21:53:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 63 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-18 21:53:42,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:42,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:42,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:42,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1383709583, now seen corresponding path program 1 times [2023-12-18 21:53:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:42,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436428321] [2023-12-18 21:53:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436428321] [2023-12-18 21:53:42,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436428321] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:42,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:42,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 21:53:42,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975576883] [2023-12-18 21:53:42,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:42,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 21:53:42,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:42,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 21:53:42,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 21:53:42,406 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 63 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:42,435 INFO L93 Difference]: Finished difference Result 113 states and 195 transitions. [2023-12-18 21:53:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 21:53:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-18 21:53:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:42,442 INFO L225 Difference]: With dead ends: 113 [2023-12-18 21:53:42,442 INFO L226 Difference]: Without dead ends: 62 [2023-12-18 21:53:42,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 21:53:42,448 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:42,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-18 21:53:42,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-12-18 21:53:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:42,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2023-12-18 21:53:42,475 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 31 [2023-12-18 21:53:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:42,475 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2023-12-18 21:53:42,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2023-12-18 21:53:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-18 21:53:42,477 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:42,477 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:42,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 21:53:42,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:42,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2085180442, now seen corresponding path program 1 times [2023-12-18 21:53:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:42,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334545164] [2023-12-18 21:53:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:42,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:42,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334545164] [2023-12-18 21:53:42,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334545164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:42,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:42,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 21:53:42,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815530] [2023-12-18 21:53:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 21:53:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 21:53:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 21:53:42,675 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:42,705 INFO L93 Difference]: Finished difference Result 137 states and 242 transitions. [2023-12-18 21:53:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 21:53:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-18 21:53:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:42,708 INFO L225 Difference]: With dead ends: 137 [2023-12-18 21:53:42,708 INFO L226 Difference]: Without dead ends: 76 [2023-12-18 21:53:42,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 21:53:42,710 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 22 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:42,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 196 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-18 21:53:42,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2023-12-18 21:53:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 67 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:42,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 116 transitions. [2023-12-18 21:53:42,724 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 116 transitions. Word has length 31 [2023-12-18 21:53:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:42,724 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 116 transitions. [2023-12-18 21:53:42,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:42,725 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 116 transitions. [2023-12-18 21:53:42,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-18 21:53:42,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:42,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:42,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 21:53:42,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:42,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1548527453, now seen corresponding path program 1 times [2023-12-18 21:53:42,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:42,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440687040] [2023-12-18 21:53:42,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:42,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440687040] [2023-12-18 21:53:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440687040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:42,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331762962] [2023-12-18 21:53:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:42,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:42,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:42,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:42,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 21:53:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:42,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 21:53:43,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:43,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:53:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:43,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331762962] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:53:43,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:53:43,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-18 21:53:43,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105812116] [2023-12-18 21:53:43,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:53:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 21:53:43,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 21:53:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-18 21:53:43,095 INFO L87 Difference]: Start difference. First operand 68 states and 116 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:43,200 INFO L93 Difference]: Finished difference Result 166 states and 294 transitions. [2023-12-18 21:53:43,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 41 [2023-12-18 21:53:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:43,206 INFO L225 Difference]: With dead ends: 166 [2023-12-18 21:53:43,206 INFO L226 Difference]: Without dead ends: 105 [2023-12-18 21:53:43,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-18 21:53:43,207 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 141 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:43,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 417 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 21:53:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-18 21:53:43,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-18 21:53:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.75) internal successors, (182), 104 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 182 transitions. [2023-12-18 21:53:43,213 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 182 transitions. Word has length 41 [2023-12-18 21:53:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:43,213 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 182 transitions. [2023-12-18 21:53:43,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 182 transitions. [2023-12-18 21:53:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 21:53:43,214 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:43,215 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:43,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 21:53:43,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:43,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:43,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:43,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1006070446, now seen corresponding path program 1 times [2023-12-18 21:53:43,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:43,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804522135] [2023-12-18 21:53:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:43,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-18 21:53:43,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:43,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804522135] [2023-12-18 21:53:43,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804522135] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:43,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:43,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 21:53:43,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007454124] [2023-12-18 21:53:43,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:43,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 21:53:43,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 21:53:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 21:53:43,499 INFO L87 Difference]: Start difference. First operand 105 states and 182 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:43,521 INFO L93 Difference]: Finished difference Result 191 states and 336 transitions. [2023-12-18 21:53:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 21:53:43,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 71 [2023-12-18 21:53:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:43,523 INFO L225 Difference]: With dead ends: 191 [2023-12-18 21:53:43,524 INFO L226 Difference]: Without dead ends: 117 [2023-12-18 21:53:43,524 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 [2023-12-18 21:53:43,528 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 99 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:43,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 137 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-18 21:53:43,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 109. [2023-12-18 21:53:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.7407407407407407) internal successors, (188), 108 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 188 transitions. [2023-12-18 21:53:43,542 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 188 transitions. Word has length 71 [2023-12-18 21:53:43,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:43,542 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 188 transitions. [2023-12-18 21:53:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,542 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 188 transitions. [2023-12-18 21:53:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 21:53:43,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:43,544 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:43,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 21:53:43,544 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:43,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1360624148, now seen corresponding path program 2 times [2023-12-18 21:53:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513420488] [2023-12-18 21:53:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:43,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-18 21:53:43,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:43,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513420488] [2023-12-18 21:53:43,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513420488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:43,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:43,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 21:53:43,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486731950] [2023-12-18 21:53:43,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:43,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 21:53:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:43,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 21:53:43,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 21:53:43,724 INFO L87 Difference]: Start difference. First operand 109 states and 188 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:43,734 INFO L93 Difference]: Finished difference Result 240 states and 419 transitions. [2023-12-18 21:53:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 21:53:43,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 71 [2023-12-18 21:53:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:43,735 INFO L225 Difference]: With dead ends: 240 [2023-12-18 21:53:43,735 INFO L226 Difference]: Without dead ends: 151 [2023-12-18 21:53:43,737 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 [2023-12-18 21:53:43,738 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 17 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:43,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 207 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-12-18 21:53:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2023-12-18 21:53:43,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.7142857142857142) internal successors, (192), 112 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 192 transitions. [2023-12-18 21:53:43,752 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 192 transitions. Word has length 71 [2023-12-18 21:53:43,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:43,753 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 192 transitions. [2023-12-18 21:53:43,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 192 transitions. [2023-12-18 21:53:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-18 21:53:43,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:43,757 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:43,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 21:53:43,758 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:43,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1366982758, now seen corresponding path program 1 times [2023-12-18 21:53:43,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:43,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297161654] [2023-12-18 21:53:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:43,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:43,954 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297161654] [2023-12-18 21:53:43,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297161654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:43,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389584581] [2023-12-18 21:53:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:43,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:43,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:43,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:43,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 21:53:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:44,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-18 21:53:44,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:44,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:53:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:44,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389584581] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:53:44,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:53:44,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-18 21:53:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494243276] [2023-12-18 21:53:44,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:53:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-18 21:53:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-18 21:53:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-12-18 21:53:44,205 INFO L87 Difference]: Start difference. First operand 113 states and 192 transitions. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:44,529 INFO L93 Difference]: Finished difference Result 290 states and 504 transitions. [2023-12-18 21:53:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 21:53:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-18 21:53:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:44,531 INFO L225 Difference]: With dead ends: 290 [2023-12-18 21:53:44,531 INFO L226 Difference]: Without dead ends: 213 [2023-12-18 21:53:44,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-12-18 21:53:44,532 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 409 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:44,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1201 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 21:53:44,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-18 21:53:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203. [2023-12-18 21:53:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.7079207920792079) internal successors, (345), 202 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 345 transitions. [2023-12-18 21:53:44,537 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 345 transitions. Word has length 71 [2023-12-18 21:53:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:44,537 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 345 transitions. [2023-12-18 21:53:44,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 345 transitions. [2023-12-18 21:53:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-18 21:53:44,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:44,539 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:44,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 21:53:44,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-18 21:53:44,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:44,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:44,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1229807304, now seen corresponding path program 2 times [2023-12-18 21:53:44,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:44,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533737639] [2023-12-18 21:53:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:44,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:45,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:45,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533737639] [2023-12-18 21:53:45,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533737639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:45,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896857241] [2023-12-18 21:53:45,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 21:53:45,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:45,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:45,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:45,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 21:53:45,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 21:53:45,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 21:53:45,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-18 21:53:45,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:45,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:53:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 21:53:45,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896857241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:53:45,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:53:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-18 21:53:45,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036360454] [2023-12-18 21:53:45,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:53:45,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 21:53:45,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:45,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 21:53:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2023-12-18 21:53:45,655 INFO L87 Difference]: Start difference. First operand 203 states and 345 transitions. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 24 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:48,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:48,494 INFO L93 Difference]: Finished difference Result 499 states and 865 transitions. [2023-12-18 21:53:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 21:53:48,495 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 24 states have internal predecessors, (235), 0 states have call successors, (0), 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 131 [2023-12-18 21:53:48,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:48,496 INFO L225 Difference]: With dead ends: 499 [2023-12-18 21:53:48,496 INFO L226 Difference]: Without dead ends: 377 [2023-12-18 21:53:48,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2023-12-18 21:53:48,497 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1848 mSDsluCounter, 2544 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:48,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 2801 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 21:53:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-18 21:53:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 364. [2023-12-18 21:53:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.7024793388429753) internal successors, (618), 363 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) [2023-12-18 21:53:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 618 transitions. [2023-12-18 21:53:48,505 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 618 transitions. Word has length 131 [2023-12-18 21:53:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:48,505 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 618 transitions. [2023-12-18 21:53:48,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 24 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 618 transitions. [2023-12-18 21:53:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-18 21:53:48,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:48,506 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:48,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 21:53:48,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:48,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1618504458, now seen corresponding path program 3 times [2023-12-18 21:53:48,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:48,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126284814] [2023-12-18 21:53:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:48,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2023-12-18 21:53:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126284814] [2023-12-18 21:53:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126284814] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:49,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-18 21:53:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993963714] [2023-12-18 21:53:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:49,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-18 21:53:49,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-18 21:53:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-12-18 21:53:49,568 INFO L87 Difference]: Start difference. First operand 364 states and 618 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:49,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:49,799 INFO L93 Difference]: Finished difference Result 1402 states and 2375 transitions. [2023-12-18 21:53:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-18 21:53:49,799 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 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 191 [2023-12-18 21:53:49,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:49,802 INFO L225 Difference]: With dead ends: 1402 [2023-12-18 21:53:49,802 INFO L226 Difference]: Without dead ends: 1046 [2023-12-18 21:53:49,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-18 21:53:49,803 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 127 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:49,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 912 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 21:53:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-12-18 21:53:49,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 872. [2023-12-18 21:53:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.5935706084959815) internal successors, (1388), 871 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1388 transitions. [2023-12-18 21:53:49,820 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1388 transitions. Word has length 191 [2023-12-18 21:53:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:49,821 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1388 transitions. [2023-12-18 21:53:49,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:49,821 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1388 transitions. [2023-12-18 21:53:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-18 21:53:49,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:49,834 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:49,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 21:53:49,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:49,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:49,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1364244136, now seen corresponding path program 1 times [2023-12-18 21:53:49,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:49,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334242949] [2023-12-18 21:53:49,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:49,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:50,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:50,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334242949] [2023-12-18 21:53:50,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334242949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:50,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:50,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 21:53:50,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352920025] [2023-12-18 21:53:50,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:50,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 21:53:50,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:50,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 21:53:50,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:53:50,120 INFO L87 Difference]: Start difference. First operand 872 states and 1388 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:50,158 INFO L93 Difference]: Finished difference Result 925 states and 1472 transitions. [2023-12-18 21:53:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 21:53:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-12-18 21:53:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:50,161 INFO L225 Difference]: With dead ends: 925 [2023-12-18 21:53:50,161 INFO L226 Difference]: Without dead ends: 917 [2023-12-18 21:53:50,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:53:50,163 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 28 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:50,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 289 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:50,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-12-18 21:53:50,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 913. [2023-12-18 21:53:50,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 1.599780701754386) internal successors, (1459), 912 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1459 transitions. [2023-12-18 21:53:50,180 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1459 transitions. Word has length 192 [2023-12-18 21:53:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:50,180 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1459 transitions. [2023-12-18 21:53:50,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1459 transitions. [2023-12-18 21:53:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-18 21:53:50,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:50,182 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:50,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 21:53:50,183 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:50,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash 291480062, now seen corresponding path program 1 times [2023-12-18 21:53:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251985651] [2023-12-18 21:53:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:50,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:50,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:50,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251985651] [2023-12-18 21:53:50,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251985651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:50,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:50,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 21:53:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640558945] [2023-12-18 21:53:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:50,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:50,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:50,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:50,546 INFO L87 Difference]: Start difference. First operand 913 states and 1459 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:50,619 INFO L93 Difference]: Finished difference Result 957 states and 1523 transitions. [2023-12-18 21:53:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-12-18 21:53:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:50,622 INFO L225 Difference]: With dead ends: 957 [2023-12-18 21:53:50,622 INFO L226 Difference]: Without dead ends: 931 [2023-12-18 21:53:50,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-18 21:53:50,622 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:50,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 21:53:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-18 21:53:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 922. [2023-12-18 21:53:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 1.5917480998914224) internal successors, (1466), 921 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1466 transitions. [2023-12-18 21:53:50,638 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1466 transitions. Word has length 192 [2023-12-18 21:53:50,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:50,638 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1466 transitions. [2023-12-18 21:53:50,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1466 transitions. [2023-12-18 21:53:50,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-18 21:53:50,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:50,651 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:50,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 21:53:50,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:50,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash 399233867, now seen corresponding path program 1 times [2023-12-18 21:53:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:50,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215220247] [2023-12-18 21:53:50,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:50,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2023-12-18 21:53:50,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:50,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215220247] [2023-12-18 21:53:50,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215220247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:50,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:50,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 21:53:50,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650928035] [2023-12-18 21:53:50,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:50,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 21:53:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 21:53:50,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:53:50,920 INFO L87 Difference]: Start difference. First operand 922 states and 1466 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:50,945 INFO L93 Difference]: Finished difference Result 2267 states and 3607 transitions. [2023-12-18 21:53:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 21:53:50,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-12-18 21:53:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:50,949 INFO L225 Difference]: With dead ends: 2267 [2023-12-18 21:53:50,949 INFO L226 Difference]: Without dead ends: 1374 [2023-12-18 21:53:50,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:50,950 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 24 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:50,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 306 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:50,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-12-18 21:53:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1210. [2023-12-18 21:53:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.554177005789909) internal successors, (1879), 1209 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1879 transitions. [2023-12-18 21:53:50,969 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1879 transitions. Word has length 192 [2023-12-18 21:53:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:50,969 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1879 transitions. [2023-12-18 21:53:50,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1879 transitions. [2023-12-18 21:53:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-18 21:53:50,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:50,971 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:50,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 21:53:50,971 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:50,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash 956364934, now seen corresponding path program 1 times [2023-12-18 21:53:50,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315611351] [2023-12-18 21:53:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:50,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 287 proven. 14 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-18 21:53:51,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315611351] [2023-12-18 21:53:51,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315611351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:51,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513869678] [2023-12-18 21:53:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:51,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:51,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:51,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:51,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 21:53:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:51,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 21:53:51,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 287 proven. 14 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-18 21:53:51,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:53:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 287 proven. 14 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-12-18 21:53:51,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513869678] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:53:51,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:53:51,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-18 21:53:51,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735778021] [2023-12-18 21:53:51,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:53:51,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:51,719 INFO L87 Difference]: Start difference. First operand 1210 states and 1879 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:51,764 INFO L93 Difference]: Finished difference Result 2576 states and 3985 transitions. [2023-12-18 21:53:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 21:53:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 192 [2023-12-18 21:53:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:51,768 INFO L225 Difference]: With dead ends: 2576 [2023-12-18 21:53:51,768 INFO L226 Difference]: Without dead ends: 1443 [2023-12-18 21:53:51,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 382 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 21:53:51,770 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 144 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:51,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 335 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:51,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-12-18 21:53:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1334. [2023-12-18 21:53:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 1.4673668417104275) internal successors, (1956), 1333 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1956 transitions. [2023-12-18 21:53:51,795 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1956 transitions. Word has length 192 [2023-12-18 21:53:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:51,795 INFO L495 AbstractCegarLoop]: Abstraction has 1334 states and 1956 transitions. [2023-12-18 21:53:51,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:51,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1956 transitions. [2023-12-18 21:53:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-18 21:53:51,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:51,797 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:51,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 21:53:52,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:52,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:52,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:52,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1137204956, now seen corresponding path program 1 times [2023-12-18 21:53:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:52,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287763186] [2023-12-18 21:53:52,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:52,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:52,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:52,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287763186] [2023-12-18 21:53:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287763186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:52,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:52,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 21:53:52,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790250379] [2023-12-18 21:53:52,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:52,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:52,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:52,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:52,431 INFO L87 Difference]: Start difference. First operand 1334 states and 1956 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:52,700 INFO L93 Difference]: Finished difference Result 1451 states and 2145 transitions. [2023-12-18 21:53:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:52,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 193 [2023-12-18 21:53:52,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:52,704 INFO L225 Difference]: With dead ends: 1451 [2023-12-18 21:53:52,704 INFO L226 Difference]: Without dead ends: 1346 [2023-12-18 21:53:52,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-18 21:53:52,705 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:52,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 21:53:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2023-12-18 21:53:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1340. [2023-12-18 21:53:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 1.4652725914861837) internal successors, (1962), 1339 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1962 transitions. [2023-12-18 21:53:52,733 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1962 transitions. Word has length 193 [2023-12-18 21:53:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:52,734 INFO L495 AbstractCegarLoop]: Abstraction has 1340 states and 1962 transitions. [2023-12-18 21:53:52,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1962 transitions. [2023-12-18 21:53:52,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-18 21:53:52,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:52,736 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:52,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 21:53:52,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:52,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1164988652, now seen corresponding path program 1 times [2023-12-18 21:53:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72558225] [2023-12-18 21:53:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 290 proven. 14 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-12-18 21:53:52,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72558225] [2023-12-18 21:53:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72558225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944013216] [2023-12-18 21:53:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:52,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:52,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:52,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 21:53:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:53,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 21:53:53,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 290 proven. 14 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-12-18 21:53:53,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:53:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 290 proven. 14 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2023-12-18 21:53:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944013216] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:53:53,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:53:53,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-12-18 21:53:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141908005] [2023-12-18 21:53:53,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:53:53,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:53,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:53,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:53,334 INFO L87 Difference]: Start difference. First operand 1340 states and 1962 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:53,390 INFO L93 Difference]: Finished difference Result 3111 states and 4580 transitions. [2023-12-18 21:53:53,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 21:53:53,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 193 [2023-12-18 21:53:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:53,395 INFO L225 Difference]: With dead ends: 3111 [2023-12-18 21:53:53,395 INFO L226 Difference]: Without dead ends: 1829 [2023-12-18 21:53:53,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 384 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 21:53:53,398 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 164 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:53,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 414 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:53,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2023-12-18 21:53:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1684. [2023-12-18 21:53:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.4254307783719549) internal successors, (2399), 1683 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2399 transitions. [2023-12-18 21:53:53,462 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2399 transitions. Word has length 193 [2023-12-18 21:53:53,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:53,463 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2399 transitions. [2023-12-18 21:53:53,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:53,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2399 transitions. [2023-12-18 21:53:53,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-18 21:53:53,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:53,466 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:53,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 21:53:53,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-18 21:53:53,671 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:53,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1033270472, now seen corresponding path program 1 times [2023-12-18 21:53:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790058754] [2023-12-18 21:53:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:53,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:53,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790058754] [2023-12-18 21:53:53,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790058754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:53,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:53,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 21:53:53,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050170528] [2023-12-18 21:53:53,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:53,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:53,990 INFO L87 Difference]: Start difference. First operand 1684 states and 2399 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2023-12-18 21:53:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:54,141 INFO L93 Difference]: Finished difference Result 1757 states and 2506 transitions. [2023-12-18 21:53:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:54,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) Word has length 194 [2023-12-18 21:53:54,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:54,145 INFO L225 Difference]: With dead ends: 1757 [2023-12-18 21:53:54,145 INFO L226 Difference]: Without dead ends: 1702 [2023-12-18 21:53:54,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-18 21:53:54,146 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 4 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:54,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 386 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 21:53:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2023-12-18 21:53:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1693. [2023-12-18 21:53:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 1.4219858156028369) internal successors, (2406), 1692 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2406 transitions. [2023-12-18 21:53:54,191 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2406 transitions. Word has length 194 [2023-12-18 21:53:54,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:54,191 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2406 transitions. [2023-12-18 21:53:54,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2023-12-18 21:53:54,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2406 transitions. [2023-12-18 21:53:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-18 21:53:54,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:54,195 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:54,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 21:53:54,196 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:54,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:54,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1956953642, now seen corresponding path program 1 times [2023-12-18 21:53:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751748096] [2023-12-18 21:53:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:54,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:54,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:54,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:54,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751748096] [2023-12-18 21:53:54,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751748096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:54,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:54,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 21:53:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607632607] [2023-12-18 21:53:54,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:54,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:54,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:54,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:54,542 INFO L87 Difference]: Start difference. First operand 1693 states and 2406 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:54,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:54,624 INFO L93 Difference]: Finished difference Result 1835 states and 2626 transitions. [2023-12-18 21:53:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:54,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 195 [2023-12-18 21:53:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:54,628 INFO L225 Difference]: With dead ends: 1835 [2023-12-18 21:53:54,628 INFO L226 Difference]: Without dead ends: 1705 [2023-12-18 21:53:54,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-18 21:53:54,629 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:54,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 21:53:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-12-18 21:53:54,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1699. [2023-12-18 21:53:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1698 states have (on average 1.4204946996466432) internal successors, (2412), 1698 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2412 transitions. [2023-12-18 21:53:54,668 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2412 transitions. Word has length 195 [2023-12-18 21:53:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:54,669 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2412 transitions. [2023-12-18 21:53:54,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2412 transitions. [2023-12-18 21:53:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-18 21:53:54,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:54,671 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:54,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-18 21:53:54,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:54,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2127142558, now seen corresponding path program 1 times [2023-12-18 21:53:54,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:54,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488970731] [2023-12-18 21:53:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:54,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:54,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488970731] [2023-12-18 21:53:54,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488970731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:54,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:54,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 21:53:54,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273265375] [2023-12-18 21:53:54,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:54,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:54,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:54,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:54,946 INFO L87 Difference]: Start difference. First operand 1699 states and 2412 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:55,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:55,272 INFO L93 Difference]: Finished difference Result 1801 states and 2562 transitions. [2023-12-18 21:53:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:55,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 196 [2023-12-18 21:53:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:55,279 INFO L225 Difference]: With dead ends: 1801 [2023-12-18 21:53:55,280 INFO L226 Difference]: Without dead ends: 1717 [2023-12-18 21:53:55,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-18 21:53:55,280 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 4 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:55,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 386 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 21:53:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2023-12-18 21:53:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1708. [2023-12-18 21:53:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 1.4171060339777388) internal successors, (2419), 1707 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2419 transitions. [2023-12-18 21:53:55,324 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2419 transitions. Word has length 196 [2023-12-18 21:53:55,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:55,324 INFO L495 AbstractCegarLoop]: Abstraction has 1708 states and 2419 transitions. [2023-12-18 21:53:55,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:55,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2419 transitions. [2023-12-18 21:53:55,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-18 21:53:55,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:55,327 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-18 21:53:55,327 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:55,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash 318792070, now seen corresponding path program 1 times [2023-12-18 21:53:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019408559] [2023-12-18 21:53:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:55,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:55,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019408559] [2023-12-18 21:53:55,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019408559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:55,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:53:55,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 21:53:55,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126675379] [2023-12-18 21:53:55,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:55,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:55,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:53:55,638 INFO L87 Difference]: Start difference. First operand 1708 states and 2419 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:57,142 INFO L93 Difference]: Finished difference Result 1875 states and 2670 transitions. [2023-12-18 21:53:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:57,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-12-18 21:53:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:57,146 INFO L225 Difference]: With dead ends: 1875 [2023-12-18 21:53:57,146 INFO L226 Difference]: Without dead ends: 1720 [2023-12-18 21:53:57,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-18 21:53:57,147 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:57,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 384 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-18 21:53:57,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2023-12-18 21:53:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1714. [2023-12-18 21:53:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.4156450671336835) internal successors, (2425), 1713 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2425 transitions. [2023-12-18 21:53:57,184 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2425 transitions. Word has length 197 [2023-12-18 21:53:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:57,184 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2425 transitions. [2023-12-18 21:53:57,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2425 transitions. [2023-12-18 21:53:57,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-18 21:53:57,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:57,187 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:57,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-18 21:53:57,188 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:57,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:57,188 INFO L85 PathProgramCache]: Analyzing trace with hash 145108886, now seen corresponding path program 1 times [2023-12-18 21:53:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:57,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832032867] [2023-12-18 21:53:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-18 21:53:57,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:57,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832032867] [2023-12-18 21:53:57,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832032867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:57,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735678918] [2023-12-18 21:53:57,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:57,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:57,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:57,606 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:57,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 21:53:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:57,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-18 21:53:57,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:57,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 21:53:57,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735678918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:57,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 21:53:57,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-18 21:53:57,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234367167] [2023-12-18 21:53:57,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:57,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:57,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:57,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:57,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-18 21:53:57,767 INFO L87 Difference]: Start difference. First operand 1714 states and 2425 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:57,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:57,903 INFO L93 Difference]: Finished difference Result 1765 states and 2496 transitions. [2023-12-18 21:53:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:57,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-18 21:53:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:57,907 INFO L225 Difference]: With dead ends: 1765 [2023-12-18 21:53:57,907 INFO L226 Difference]: Without dead ends: 1732 [2023-12-18 21:53:57,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-18 21:53:57,908 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 58 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:57,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 321 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 21:53:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-18 21:53:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1722. [2023-12-18 21:53:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 1.4154561301568855) internal successors, (2436), 1721 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2436 transitions. [2023-12-18 21:53:57,944 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2436 transitions. Word has length 198 [2023-12-18 21:53:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:57,944 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2436 transitions. [2023-12-18 21:53:57,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2436 transitions. [2023-12-18 21:53:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-18 21:53:57,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:57,947 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:57,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 21:53:58,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:58,152 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:58,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash 846173464, now seen corresponding path program 1 times [2023-12-18 21:53:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:58,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851145495] [2023-12-18 21:53:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-18 21:53:58,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:58,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851145495] [2023-12-18 21:53:58,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851145495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:58,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878238904] [2023-12-18 21:53:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:58,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:58,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:58,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 21:53:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:58,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 21:53:58,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:53:58,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 21:53:58,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878238904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:53:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 21:53:58,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-18 21:53:58,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524120571] [2023-12-18 21:53:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:53:58,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:53:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:58,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:53:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-18 21:53:58,679 INFO L87 Difference]: Start difference. First operand 1722 states and 2436 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:53:58,764 INFO L93 Difference]: Finished difference Result 1745 states and 2465 transitions. [2023-12-18 21:53:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:53:58,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-18 21:53:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:53:58,768 INFO L225 Difference]: With dead ends: 1745 [2023-12-18 21:53:58,769 INFO L226 Difference]: Without dead ends: 1736 [2023-12-18 21:53:58,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-18 21:53:58,770 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 58 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:53:58,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 321 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:53:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2023-12-18 21:53:58,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1728. [2023-12-18 21:53:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1727 states have (on average 1.4157498552403012) internal successors, (2445), 1727 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2445 transitions. [2023-12-18 21:53:58,806 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2445 transitions. Word has length 198 [2023-12-18 21:53:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:53:58,807 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2445 transitions. [2023-12-18 21:53:58,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:53:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2445 transitions. [2023-12-18 21:53:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-18 21:53:58,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:53:58,809 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:53:58,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 21:53:59,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:59,018 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:53:59,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:53:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash 903431766, now seen corresponding path program 1 times [2023-12-18 21:53:59,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:53:59,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526953110] [2023-12-18 21:53:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:59,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:53:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-18 21:53:59,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:53:59,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526953110] [2023-12-18 21:53:59,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526953110] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:53:59,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492098742] [2023-12-18 21:53:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:53:59,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:53:59,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:53:59,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:53:59,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 21:53:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:53:59,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 21:53:59,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:53:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 188 proven. 45 refuted. 0 times theorem prover too weak. 983 trivial. 0 not checked. [2023-12-18 21:53:59,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:53:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 217 proven. 14 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2023-12-18 21:53:59,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492098742] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:53:59,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:53:59,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 13 [2023-12-18 21:53:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916854070] [2023-12-18 21:53:59,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:53:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-18 21:53:59,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:53:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-18 21:53:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-18 21:53:59,943 INFO L87 Difference]: Start difference. First operand 1728 states and 2445 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:04,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-18 21:54:08,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-18 21:54:11,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-18 21:54:15,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-18 21:54:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:16,265 INFO L93 Difference]: Finished difference Result 1961 states and 2761 transitions. [2023-12-18 21:54:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 21:54:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2023-12-18 21:54:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:16,270 INFO L225 Difference]: With dead ends: 1961 [2023-12-18 21:54:16,270 INFO L226 Difference]: Without dead ends: 1826 [2023-12-18 21:54:16,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 388 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-18 21:54:16,286 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 226 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:16,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 911 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 217 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2023-12-18 21:54:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2023-12-18 21:54:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1713. [2023-12-18 21:54:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1712 states have (on average 1.4100467289719627) internal successors, (2414), 1712 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:16,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2414 transitions. [2023-12-18 21:54:16,318 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2414 transitions. Word has length 198 [2023-12-18 21:54:16,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:16,318 INFO L495 AbstractCegarLoop]: Abstraction has 1713 states and 2414 transitions. [2023-12-18 21:54:16,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:16,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2414 transitions. [2023-12-18 21:54:16,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-18 21:54:16,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:16,321 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:16,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 21:54:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-18 21:54:16,527 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:16,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1980779276, now seen corresponding path program 1 times [2023-12-18 21:54:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148964839] [2023-12-18 21:54:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-18 21:54:16,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148964839] [2023-12-18 21:54:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148964839] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:54:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608171906] [2023-12-18 21:54:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:16,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:16,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:54:16,827 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:54:16,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 21:54:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:16,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 21:54:16,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:54:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:54:16,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 21:54:16,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608171906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:54:16,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 21:54:16,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-18 21:54:16,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426447012] [2023-12-18 21:54:16,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:54:16,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:54:16,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:16,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:54:16,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-18 21:54:16,995 INFO L87 Difference]: Start difference. First operand 1713 states and 2414 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:17,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:17,143 INFO L93 Difference]: Finished difference Result 1784 states and 2509 transitions. [2023-12-18 21:54:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:54:17,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-18 21:54:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:17,148 INFO L225 Difference]: With dead ends: 1784 [2023-12-18 21:54:17,148 INFO L226 Difference]: Without dead ends: 1726 [2023-12-18 21:54:17,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-18 21:54:17,149 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 22 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:17,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 357 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 21:54:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-12-18 21:54:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1719. [2023-12-18 21:54:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.409778812572759) internal successors, (2422), 1718 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2422 transitions. [2023-12-18 21:54:17,210 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2422 transitions. Word has length 199 [2023-12-18 21:54:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:17,210 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 2422 transitions. [2023-12-18 21:54:17,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2422 transitions. [2023-12-18 21:54:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-18 21:54:17,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:17,213 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:17,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 21:54:17,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:17,419 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:17,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash 291835534, now seen corresponding path program 1 times [2023-12-18 21:54:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:17,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363802954] [2023-12-18 21:54:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:17,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-18 21:54:17,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363802954] [2023-12-18 21:54:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363802954] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:54:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497838229] [2023-12-18 21:54:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:17,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:17,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:54:17,712 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:54:17,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 21:54:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:17,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 21:54:17,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:54:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1216 trivial. 0 not checked. [2023-12-18 21:54:17,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 21:54:17,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497838229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:54:17,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-18 21:54:17,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-12-18 21:54:17,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97396281] [2023-12-18 21:54:17,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:54:17,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:54:17,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:54:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-18 21:54:17,858 INFO L87 Difference]: Start difference. First operand 1719 states and 2422 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:18,415 INFO L93 Difference]: Finished difference Result 1851 states and 2608 transitions. [2023-12-18 21:54:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:54:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2023-12-18 21:54:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:18,420 INFO L225 Difference]: With dead ends: 1851 [2023-12-18 21:54:18,420 INFO L226 Difference]: Without dead ends: 1732 [2023-12-18 21:54:18,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-18 21:54:18,421 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 22 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:18,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 357 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 21:54:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2023-12-18 21:54:18,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1725. [2023-12-18 21:54:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1724 states have (on average 1.4095127610208817) internal successors, (2430), 1724 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2430 transitions. [2023-12-18 21:54:18,450 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2430 transitions. Word has length 199 [2023-12-18 21:54:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:18,450 INFO L495 AbstractCegarLoop]: Abstraction has 1725 states and 2430 transitions. [2023-12-18 21:54:18,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:18,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2430 transitions. [2023-12-18 21:54:18,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-18 21:54:18,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:18,453 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:18,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 21:54:18,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-18 21:54:18,658 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:18,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash 157822028, now seen corresponding path program 1 times [2023-12-18 21:54:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:18,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878648401] [2023-12-18 21:54:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:18,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-18 21:54:18,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:18,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878648401] [2023-12-18 21:54:18,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878648401] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:54:18,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254302195] [2023-12-18 21:54:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:18,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:18,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:54:18,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:54:18,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 21:54:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:19,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-18 21:54:19,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:54:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 149 proven. 45 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2023-12-18 21:54:19,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:54:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 178 proven. 14 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2023-12-18 21:54:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254302195] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:54:19,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:54:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 13 [2023-12-18 21:54:19,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195794820] [2023-12-18 21:54:19,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:54:19,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-18 21:54:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-18 21:54:19,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-18 21:54:19,552 INFO L87 Difference]: Start difference. First operand 1725 states and 2430 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2023-12-18 21:54:22,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-18 21:54:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:24,604 INFO L93 Difference]: Finished difference Result 2021 states and 2839 transitions. [2023-12-18 21:54:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 21:54:24,605 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) Word has length 199 [2023-12-18 21:54:24,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:24,608 INFO L225 Difference]: With dead ends: 2021 [2023-12-18 21:54:24,608 INFO L226 Difference]: Without dead ends: 1632 [2023-12-18 21:54:24,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 391 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-12-18 21:54:24,609 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 272 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:24,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 769 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-18 21:54:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-18 21:54:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1526. [2023-12-18 21:54:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.4275409836065573) internal successors, (2177), 1525 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2177 transitions. [2023-12-18 21:54:24,635 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2177 transitions. Word has length 199 [2023-12-18 21:54:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:24,635 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2177 transitions. [2023-12-18 21:54:24,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 13 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) [2023-12-18 21:54:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2177 transitions. [2023-12-18 21:54:24,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-18 21:54:24,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:24,638 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:24,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 21:54:24,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-18 21:54:24,843 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:24,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:24,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1429820028, now seen corresponding path program 1 times [2023-12-18 21:54:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:24,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653601596] [2023-12-18 21:54:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-12-18 21:54:24,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:24,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653601596] [2023-12-18 21:54:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653601596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:54:24,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:54:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 21:54:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547842546] [2023-12-18 21:54:24,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:54:24,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 21:54:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:24,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 21:54:24,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:54:24,926 INFO L87 Difference]: Start difference. First operand 1526 states and 2177 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:24,962 INFO L93 Difference]: Finished difference Result 2496 states and 3438 transitions. [2023-12-18 21:54:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 21:54:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 207 [2023-12-18 21:54:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:24,973 INFO L225 Difference]: With dead ends: 2496 [2023-12-18 21:54:24,974 INFO L226 Difference]: Without dead ends: 1570 [2023-12-18 21:54:24,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:54:24,975 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 112 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:24,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 325 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:54:24,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-12-18 21:54:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1526. [2023-12-18 21:54:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.4013114754098361) internal successors, (2137), 1525 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2137 transitions. [2023-12-18 21:54:24,998 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2137 transitions. Word has length 207 [2023-12-18 21:54:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:24,998 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2137 transitions. [2023-12-18 21:54:24,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2137 transitions. [2023-12-18 21:54:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-18 21:54:25,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:25,000 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:25,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-18 21:54:25,001 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:25,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1174738906, now seen corresponding path program 1 times [2023-12-18 21:54:25,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:25,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400726147] [2023-12-18 21:54:25,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:25,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 1071 trivial. 0 not checked. [2023-12-18 21:54:25,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400726147] [2023-12-18 21:54:25,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400726147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:54:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141928471] [2023-12-18 21:54:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:25,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:25,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:54:25,196 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:54:25,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 21:54:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:25,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-18 21:54:25,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:54:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 271 proven. 8 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2023-12-18 21:54:25,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:54:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 340 proven. 8 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2023-12-18 21:54:25,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141928471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:54:25,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:54:25,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 8] total 16 [2023-12-18 21:54:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72650164] [2023-12-18 21:54:25,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:54:25,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-18 21:54:25,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-18 21:54:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-12-18 21:54:25,515 INFO L87 Difference]: Start difference. First operand 1526 states and 2137 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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) [2023-12-18 21:54:26,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:26,073 INFO L93 Difference]: Finished difference Result 3987 states and 5863 transitions. [2023-12-18 21:54:26,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-18 21:54:26,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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) Word has length 207 [2023-12-18 21:54:26,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:26,077 INFO L225 Difference]: With dead ends: 3987 [2023-12-18 21:54:26,077 INFO L226 Difference]: Without dead ends: 2720 [2023-12-18 21:54:26,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=1164, Unknown=0, NotChecked=0, Total=1482 [2023-12-18 21:54:26,079 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 823 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:26,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1658 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 21:54:26,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2023-12-18 21:54:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2105. [2023-12-18 21:54:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 2104 states have (on average 1.4139733840304183) internal successors, (2975), 2104 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2975 transitions. [2023-12-18 21:54:26,116 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2975 transitions. Word has length 207 [2023-12-18 21:54:26,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:26,117 INFO L495 AbstractCegarLoop]: Abstraction has 2105 states and 2975 transitions. [2023-12-18 21:54:26,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 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) [2023-12-18 21:54:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2975 transitions. [2023-12-18 21:54:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-18 21:54:26,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:26,120 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:26,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 21:54:26,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-18 21:54:26,325 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:26,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash 616295070, now seen corresponding path program 1 times [2023-12-18 21:54:26,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:26,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079348462] [2023-12-18 21:54:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:26,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 76 proven. 30 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2023-12-18 21:54:26,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:26,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079348462] [2023-12-18 21:54:26,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079348462] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:54:26,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412195918] [2023-12-18 21:54:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:26,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:26,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:54:26,820 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:54:26,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 21:54:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:26,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-18 21:54:26,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:54:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 297 proven. 10 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2023-12-18 21:54:27,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:54:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 343 proven. 5 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2023-12-18 21:54:27,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412195918] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:54:27,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:54:27,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 21 [2023-12-18 21:54:27,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654375905] [2023-12-18 21:54:27,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:54:27,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-18 21:54:27,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:27,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-18 21:54:27,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-18 21:54:27,229 INFO L87 Difference]: Start difference. First operand 2105 states and 2975 transitions. Second operand has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:31,122 INFO L93 Difference]: Finished difference Result 7591 states and 10843 transitions. [2023-12-18 21:54:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-12-18 21:54:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 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 207 [2023-12-18 21:54:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:31,130 INFO L225 Difference]: With dead ends: 7591 [2023-12-18 21:54:31,131 INFO L226 Difference]: Without dead ends: 5505 [2023-12-18 21:54:31,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6509 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1912, Invalid=15910, Unknown=0, NotChecked=0, Total=17822 [2023-12-18 21:54:31,137 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 677 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:31,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1930 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 21:54:31,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2023-12-18 21:54:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 3535. [2023-12-18 21:54:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3535 states, 3534 states have (on average 1.4408602150537635) internal successors, (5092), 3534 states have internal predecessors, (5092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3535 states to 3535 states and 5092 transitions. [2023-12-18 21:54:31,236 INFO L78 Accepts]: Start accepts. Automaton has 3535 states and 5092 transitions. Word has length 207 [2023-12-18 21:54:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:31,236 INFO L495 AbstractCegarLoop]: Abstraction has 3535 states and 5092 transitions. [2023-12-18 21:54:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.619047619047619) internal successors, (118), 21 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3535 states and 5092 transitions. [2023-12-18 21:54:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-18 21:54:31,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:31,241 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:31,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-18 21:54:31,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-18 21:54:31,446 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:31,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash 391349526, now seen corresponding path program 2 times [2023-12-18 21:54:31,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:31,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197532272] [2023-12-18 21:54:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 232 proven. 28 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-12-18 21:54:32,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197532272] [2023-12-18 21:54:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197532272] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:54:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299429345] [2023-12-18 21:54:32,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 21:54:32,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:32,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:54:32,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:54:32,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 21:54:32,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 21:54:32,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 21:54:32,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-18 21:54:32,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:54:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 232 proven. 28 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-12-18 21:54:32,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:54:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 232 proven. 28 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2023-12-18 21:54:32,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299429345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:54:32,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:54:32,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-12-18 21:54:32,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373979342] [2023-12-18 21:54:32,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:54:32,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-18 21:54:32,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:32,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-18 21:54:32,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-18 21:54:32,696 INFO L87 Difference]: Start difference. First operand 3535 states and 5092 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:35,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-18 21:54:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:36,489 INFO L93 Difference]: Finished difference Result 5422 states and 7950 transitions. [2023-12-18 21:54:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 21:54:36,490 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 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 207 [2023-12-18 21:54:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:36,497 INFO L225 Difference]: With dead ends: 5422 [2023-12-18 21:54:36,497 INFO L226 Difference]: Without dead ends: 5351 [2023-12-18 21:54:36,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 411 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-18 21:54:36,499 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 323 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:36,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1681 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-18 21:54:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5351 states. [2023-12-18 21:54:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5351 to 3493. [2023-12-18 21:54:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 3492 states have (on average 1.4392898052691867) internal successors, (5026), 3492 states have internal predecessors, (5026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5026 transitions. [2023-12-18 21:54:36,618 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5026 transitions. Word has length 207 [2023-12-18 21:54:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:36,619 INFO L495 AbstractCegarLoop]: Abstraction has 3493 states and 5026 transitions. [2023-12-18 21:54:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:36,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5026 transitions. [2023-12-18 21:54:36,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-18 21:54:36,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:36,625 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:36,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 21:54:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:36,831 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:36,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2134069955, now seen corresponding path program 1 times [2023-12-18 21:54:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766317184] [2023-12-18 21:54:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2023-12-18 21:54:37,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766317184] [2023-12-18 21:54:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766317184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 21:54:37,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707082132] [2023-12-18 21:54:37,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:37,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 21:54:37,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 21:54:37,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 21:54:37,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 21:54:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:37,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 21:54:37,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 21:54:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 136 proven. 115 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-12-18 21:54:37,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 21:54:37,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 236 proven. 15 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-12-18 21:54:37,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707082132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 21:54:37,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 21:54:37,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 8] total 17 [2023-12-18 21:54:37,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098229815] [2023-12-18 21:54:37,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 21:54:37,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-18 21:54:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-18 21:54:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-18 21:54:37,611 INFO L87 Difference]: Start difference. First operand 3493 states and 5026 transitions. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:38,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:38,798 INFO L93 Difference]: Finished difference Result 17174 states and 25318 transitions. [2023-12-18 21:54:38,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-18 21:54:38,799 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 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 208 [2023-12-18 21:54:38,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:38,815 INFO L225 Difference]: With dead ends: 17174 [2023-12-18 21:54:38,816 INFO L226 Difference]: Without dead ends: 13608 [2023-12-18 21:54:38,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1062, Invalid=3228, Unknown=0, NotChecked=0, Total=4290 [2023-12-18 21:54:38,820 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 1392 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:38,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 1413 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 21:54:38,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13608 states. [2023-12-18 21:54:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13608 to 5871. [2023-12-18 21:54:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5871 states, 5870 states have (on average 1.4415672913117548) internal successors, (8462), 5870 states have internal predecessors, (8462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5871 states to 5871 states and 8462 transitions. [2023-12-18 21:54:38,978 INFO L78 Accepts]: Start accepts. Automaton has 5871 states and 8462 transitions. Word has length 208 [2023-12-18 21:54:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:38,979 INFO L495 AbstractCegarLoop]: Abstraction has 5871 states and 8462 transitions. [2023-12-18 21:54:38,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:38,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5871 states and 8462 transitions. [2023-12-18 21:54:38,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-18 21:54:38,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:38,986 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:38,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-18 21:54:39,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 21:54:39,194 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:39,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:39,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1279877338, now seen corresponding path program 1 times [2023-12-18 21:54:39,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:39,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771078042] [2023-12-18 21:54:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:39,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1321 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2023-12-18 21:54:39,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:39,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771078042] [2023-12-18 21:54:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771078042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:54:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:54:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 21:54:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426517712] [2023-12-18 21:54:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:54:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 21:54:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 21:54:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:54:39,278 INFO L87 Difference]: Start difference. First operand 5871 states and 8462 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:39,416 INFO L93 Difference]: Finished difference Result 7185 states and 10167 transitions. [2023-12-18 21:54:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 21:54:39,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 208 [2023-12-18 21:54:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:39,422 INFO L225 Difference]: With dead ends: 7185 [2023-12-18 21:54:39,423 INFO L226 Difference]: Without dead ends: 5652 [2023-12-18 21:54:39,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:54:39,424 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 117 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:39,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 333 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 21:54:39,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2023-12-18 21:54:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5605. [2023-12-18 21:54:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5605 states, 5604 states have (on average 1.407387580299786) internal successors, (7887), 5604 states have internal predecessors, (7887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5605 states to 5605 states and 7887 transitions. [2023-12-18 21:54:39,559 INFO L78 Accepts]: Start accepts. Automaton has 5605 states and 7887 transitions. Word has length 208 [2023-12-18 21:54:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:39,560 INFO L495 AbstractCegarLoop]: Abstraction has 5605 states and 7887 transitions. [2023-12-18 21:54:39,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:39,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5605 states and 7887 transitions. [2023-12-18 21:54:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-18 21:54:39,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:39,567 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-18 21:54:39,567 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:39,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1176574331, now seen corresponding path program 1 times [2023-12-18 21:54:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:39,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693556717] [2023-12-18 21:54:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:39,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2023-12-18 21:54:39,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:39,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693556717] [2023-12-18 21:54:39,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693556717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:54:39,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:54:39,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 21:54:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385500325] [2023-12-18 21:54:39,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:54:39,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 21:54:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 21:54:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:54:39,892 INFO L87 Difference]: Start difference. First operand 5605 states and 7887 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:40,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:40,148 INFO L93 Difference]: Finished difference Result 9231 states and 13128 transitions. [2023-12-18 21:54:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 21:54:40,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 208 [2023-12-18 21:54:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:40,159 INFO L225 Difference]: With dead ends: 9231 [2023-12-18 21:54:40,159 INFO L226 Difference]: Without dead ends: 9052 [2023-12-18 21:54:40,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-18 21:54:40,162 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 139 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:40,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 615 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 21:54:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9052 states. [2023-12-18 21:54:40,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9052 to 8875. [2023-12-18 21:54:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8875 states, 8874 states have (on average 1.422920892494929) internal successors, (12627), 8874 states have internal predecessors, (12627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8875 states to 8875 states and 12627 transitions. [2023-12-18 21:54:40,427 INFO L78 Accepts]: Start accepts. Automaton has 8875 states and 12627 transitions. Word has length 208 [2023-12-18 21:54:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:40,428 INFO L495 AbstractCegarLoop]: Abstraction has 8875 states and 12627 transitions. [2023-12-18 21:54:40,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8875 states and 12627 transitions. [2023-12-18 21:54:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-18 21:54:40,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:40,439 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:40,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-18 21:54:40,439 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:40,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:40,440 INFO L85 PathProgramCache]: Analyzing trace with hash -668792835, now seen corresponding path program 1 times [2023-12-18 21:54:40,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:40,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383882183] [2023-12-18 21:54:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:40,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2023-12-18 21:54:40,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383882183] [2023-12-18 21:54:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383882183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:54:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:54:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 21:54:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319615992] [2023-12-18 21:54:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:54:40,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 21:54:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 21:54:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:54:40,764 INFO L87 Difference]: Start difference. First operand 8875 states and 12627 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:44,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-18 21:54:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:44,977 INFO L93 Difference]: Finished difference Result 9099 states and 12935 transitions. [2023-12-18 21:54:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 21:54:44,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2023-12-18 21:54:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:44,987 INFO L225 Difference]: With dead ends: 9099 [2023-12-18 21:54:44,987 INFO L226 Difference]: Without dead ends: 8920 [2023-12-18 21:54:44,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 21:54:44,990 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 93 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:44,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 367 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-18 21:54:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8920 states. [2023-12-18 21:54:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8920 to 5604. [2023-12-18 21:54:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 5603 states have (on average 1.4065679100481885) internal successors, (7881), 5603 states have internal predecessors, (7881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 7881 transitions. [2023-12-18 21:54:45,170 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 7881 transitions. Word has length 208 [2023-12-18 21:54:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:45,170 INFO L495 AbstractCegarLoop]: Abstraction has 5604 states and 7881 transitions. [2023-12-18 21:54:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:45,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 7881 transitions. [2023-12-18 21:54:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-18 21:54:45,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:45,177 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:45,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-18 21:54:45,177 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:45,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash 196621721, now seen corresponding path program 1 times [2023-12-18 21:54:45,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:45,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360033472] [2023-12-18 21:54:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:45,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 21:54:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-18 21:54:45,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 21:54:45,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360033472] [2023-12-18 21:54:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360033472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 21:54:45,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 21:54:45,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 21:54:45,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436374673] [2023-12-18 21:54:45,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 21:54:45,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 21:54:45,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 21:54:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 21:54:45,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:54:45,506 INFO L87 Difference]: Start difference. First operand 5604 states and 7881 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 21:54:45,836 INFO L93 Difference]: Finished difference Result 5673 states and 7983 transitions. [2023-12-18 21:54:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 21:54:45,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 209 [2023-12-18 21:54:45,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 21:54:45,842 INFO L225 Difference]: With dead ends: 5673 [2023-12-18 21:54:45,842 INFO L226 Difference]: Without dead ends: 5618 [2023-12-18 21:54:45,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 21:54:45,843 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 6 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 21:54:45,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 286 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 21:54:45,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2023-12-18 21:54:45,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5610. [2023-12-18 21:54:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5610 states, 5609 states have (on average 1.4061330005348547) internal successors, (7887), 5609 states have internal predecessors, (7887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5610 states to 5610 states and 7887 transitions. [2023-12-18 21:54:45,985 INFO L78 Accepts]: Start accepts. Automaton has 5610 states and 7887 transitions. Word has length 209 [2023-12-18 21:54:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 21:54:45,985 INFO L495 AbstractCegarLoop]: Abstraction has 5610 states and 7887 transitions. [2023-12-18 21:54:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 21:54:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5610 states and 7887 transitions. [2023-12-18 21:54:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-12-18 21:54:45,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 21:54:45,991 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:45,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-18 21:54:45,991 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 21:54:45,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 21:54:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1083241957, now seen corresponding path program 1 times [2023-12-18 21:54:45,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 21:54:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044100001] [2023-12-18 21:54:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 21:54:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 21:54:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-18 21:54:46,192 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-18 21:54:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-18 21:54:46,411 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-18 21:54:46,411 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-18 21:54:46,412 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 21:54:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-18 21:54:46,415 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 21:54:46,418 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 21:54:46,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 09:54:46 BoogieIcfgContainer [2023-12-18 21:54:46,485 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 21:54:46,485 INFO L158 Benchmark]: Toolchain (without parser) took 67735.39ms. Allocated memory was 191.9MB in the beginning and 644.9MB in the end (delta: 453.0MB). Free memory was 138.0MB in the beginning and 416.6MB in the end (delta: -278.6MB). Peak memory consumption was 175.8MB. Max. memory is 8.0GB. [2023-12-18 21:54:46,485 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 191.9MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 21:54:46,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.07ms. Allocated memory is still 191.9MB. Free memory was 138.0MB in the beginning and 126.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 21:54:46,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.94ms. Allocated memory is still 191.9MB. Free memory was 126.5MB in the beginning and 123.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-18 21:54:46,485 INFO L158 Benchmark]: Boogie Preprocessor took 34.89ms. Allocated memory is still 191.9MB. Free memory was 123.9MB in the beginning and 121.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 21:54:46,486 INFO L158 Benchmark]: RCFGBuilder took 3191.65ms. Allocated memory is still 191.9MB. Free memory was 121.3MB in the beginning and 150.9MB in the end (delta: -29.7MB). Peak memory consumption was 20.4MB. Max. memory is 8.0GB. [2023-12-18 21:54:46,486 INFO L158 Benchmark]: TraceAbstraction took 64292.28ms. Allocated memory was 191.9MB in the beginning and 644.9MB in the end (delta: 453.0MB). Free memory was 149.9MB in the beginning and 416.6MB in the end (delta: -266.7MB). Peak memory consumption was 186.8MB. Max. memory is 8.0GB. [2023-12-18 21:54:46,486 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 191.9MB. Free memory is still 144.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.07ms. Allocated memory is still 191.9MB. Free memory was 138.0MB in the beginning and 126.5MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.94ms. Allocated memory is still 191.9MB. Free memory was 126.5MB in the beginning and 123.9MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.89ms. Allocated memory is still 191.9MB. Free memory was 123.9MB in the beginning and 121.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 3191.65ms. Allocated memory is still 191.9MB. Free memory was 121.3MB in the beginning and 150.9MB in the end (delta: -29.7MB). Peak memory consumption was 20.4MB. Max. memory is 8.0GB. * TraceAbstraction took 64292.28ms. Allocated memory was 191.9MB in the beginning and 644.9MB in the end (delta: 453.0MB). Free memory was 149.9MB in the beginning and 416.6MB in the end (delta: -266.7MB). Peak memory consumption was 186.8MB. 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 - UnprovableResult [Line: 25]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 50, overapproximation of bitwiseOr at line 59, overapproximation of bitwiseAnd at line 59. Possible FailurePath: [L42] unsigned short x = __VERIFIER_nondet_ushort(); [L43] unsigned short y = __VERIFIER_nondet_ushort(); [L44] unsigned int xx; [L45] unsigned int yy; [L46] unsigned int zz; [L47] unsigned int z = 0; [L48] unsigned int i = 0; VAL [i=0, z=0] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=0, z=0] [L50] EXPR 1U << i VAL [i=0, z=0] [L50] EXPR x & (1U << i) VAL [i=0, x=0, z=0] [L50] EXPR (x & (1U << i)) << i VAL [i=0, x=0, z=0] [L50] EXPR 1U << i VAL [i=0, x=0, z=0] [L50] EXPR y & (1U << i) VAL [i=0, x=0, y=1, z=0] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=0, x=0, y=1, z=0] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=0, x=0, y=1, z=0] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=1, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=1, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=1, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=1, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=1, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=1, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=1, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=1, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=1, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=2, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=2, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=2, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=2, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=2, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=2, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=2, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=2, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=2, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=3, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=3, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=3, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=3, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=3, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=3, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=3, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=3, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=3, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=4, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=4, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=4, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=4, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=4, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=4, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=4, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=4, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=4, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=5, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=5, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=5, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=5, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=5, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=5, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=5, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=5, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=5, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=6, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=6, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=6, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=6, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=6, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=6, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=6, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=6, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=6, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=7, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=7, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=7, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=7, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=7, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=7, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=7, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=7, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=7, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=8, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=8, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=8, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=8, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=8, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=8, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=8, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=8, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=8, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=9, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=9, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=9, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=9, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=9, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=9, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=9, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=9, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=9, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=10, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=10, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=10, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=10, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=10, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=10, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=10, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=10, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=10, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=11, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=11, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=11, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=11, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=11, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=11, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=11, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=11, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=11, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=12, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=12, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=12, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=12, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=12, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=12, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=12, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=12, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=12, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=13, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=13, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=13, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=13, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=13, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=13, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=13, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=13, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=13, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=14, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=14, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=14, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=14, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=14, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=14, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=14, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=14, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=14, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=15, x=0, y=1, z=4294967295] [L49] COND TRUE i < sizeof(x) * 8 VAL [i=15, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=15, x=0, y=1, z=4294967295] [L50] EXPR x & (1U << i) VAL [i=15, x=0, y=1, z=4294967295] [L50] EXPR (x & (1U << i)) << i VAL [i=15, x=0, y=1, z=4294967295] [L50] EXPR 1U << i VAL [i=15, x=0, y=1, z=4294967295] [L50] EXPR y & (1U << i) VAL [i=15, x=0, y=1, z=4294967295] [L50] EXPR (y & (1U << i)) << (i + 1) VAL [i=15, x=0, y=1, z=4294967295] [L50] EXPR ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) VAL [i=15, x=0, y=1, z=4294967295] [L50] z |= ((x & (1U << i)) << i) | ((y & (1U << i)) << (i + 1)) [L51] i += 1U VAL [i=16, x=0, y=1, z=4294967295] [L49] COND FALSE !(i < sizeof(x) * 8) VAL [i=16, x=0, y=1, z=4294967295] [L53] xx = x [L54] yy = y VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L55] EXPR xx | (xx << 8u) VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L55] EXPR (xx | (xx << 8u)) & 16711935U VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L55] xx = (xx | (xx << 8u)) & 16711935U [L56] EXPR xx | (xx << 4u) VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L56] EXPR (xx | (xx << 4u)) & 252645135U VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L56] xx = (xx | (xx << 4u)) & 252645135U [L57] EXPR xx | (xx << 2u) VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L57] EXPR (xx | (xx << 2u)) & 858993459U VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L57] xx = (xx | (xx << 2u)) & 858993459U [L58] EXPR xx | (xx << 1u) VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L58] EXPR (xx | (xx << 1u)) & 1431655765U VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L58] xx = (xx | (xx << 1u)) & 1431655765U [L59] EXPR yy | (yy << 8u) VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L59] EXPR (yy | (yy << 8u)) & 16711935U VAL [i=16, x=0, xx=0, y=1, yy=1, z=4294967295] [L59] yy = (yy | (yy << 8u)) & 16711935U [L60] EXPR yy | (yy << 4u) VAL [i=16, x=0, xx=0, y=1, yy=0, z=4294967295] [L60] EXPR (yy | (yy << 4u)) & 252645135U VAL [i=16, x=0, xx=0, y=1, yy=0, z=4294967295] [L60] yy = (yy | (yy << 4u)) & 252645135U [L61] EXPR yy | (yy << 2u) VAL [i=16, x=0, xx=0, y=1, yy=0, z=4294967295] [L61] EXPR (yy | (yy << 2u)) & 858993459U VAL [i=16, x=0, xx=0, y=1, yy=0, z=4294967295] [L61] yy = (yy | (yy << 2u)) & 858993459U [L62] EXPR yy | (yy << 1u) VAL [i=16, x=0, xx=0, y=1, yy=0, z=4294967295] [L62] EXPR (yy | (yy << 1u)) & 1431655765U VAL [i=16, x=0, xx=0, y=1, yy=0, z=4294967295] [L62] yy = (yy | (yy << 1u)) & 1431655765U [L64] EXPR xx | (yy << 1U) VAL [i=16, x=0, xx=0, y=1, yy=0, z=4294967295] [L64] zz = xx | (yy << 1U) [L66] CALL __VERIFIER_assert(z == zz) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.2s, OverallIterations: 34, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 43.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 7387 SdHoareTripleChecker+Valid, 34.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7387 mSDsluCounter, 21275 SdHoareTripleChecker+Invalid, 33.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17070 mSDsCounter, 360 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4916 IncrementalHoareTripleChecker+Invalid, 5280 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 360 mSolverCounterUnsat, 4205 mSDtfsCounter, 4916 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4956 GetRequests, 4476 SyntacticMatches, 19 SemanticMatches, 461 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8516 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8875occurred in iteration=31, InterpolantAutomatonStates: 441, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 33 MinimizatonAttempts, 16741 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 8491 NumberOfCodeBlocks, 8491 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 10077 ConstructedInterpolants, 0 QuantifiedInterpolants, 38922 SizeOfPredicates, 55 NumberOfNonLiveVariables, 7565 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 59 InterpolantComputations, 22 PerfectInterpolantSequences, 57509/59649 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-18 21:54:46,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...