/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/systemc/mem_slave_tlm.2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:06:04,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:06:04,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:06:04,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:06:04,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:06:04,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:06:04,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:06:04,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:06:04,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:06:04,777 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:06:04,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:06:04,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:06:04,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:06:04,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:06:04,779 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:06:04,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:06:04,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:06:04,779 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:06:04,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:06:04,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:06:04,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:06:04,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:06:04,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:06:04,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:06:04,781 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:06:04,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:06:04,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:06:04,782 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:06:04,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:06:04,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:06:04,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:06:04,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:06:04,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:06:04,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:06:04,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:06:04,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:06:04,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:06:04,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:06:04,784 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:06:04,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:06:04,784 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:06:04,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:06:04,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:06:04,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:06:04,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:06:04,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:06:04,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:06:04,997 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:06:04,997 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:06:04,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2023-12-15 23:06:06,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:06:06,151 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:06:06,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c [2023-12-15 23:06:06,164 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c4b147f/5f7ebb02e820480e8a7535d701b7bc88/FLAG7ad18797b [2023-12-15 23:06:06,173 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c4b147f/5f7ebb02e820480e8a7535d701b7bc88 [2023-12-15 23:06:06,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:06:06,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:06:06,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:06:06,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:06:06,179 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:06:06,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123e7bf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06, skipping insertion in model container [2023-12-15 23:06:06,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,207 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:06:06,312 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c[646,659] [2023-12-15 23:06:06,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:06:06,411 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:06:06,419 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.2.cil.c[646,659] [2023-12-15 23:06:06,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:06:06,470 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:06:06,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06 WrapperNode [2023-12-15 23:06:06,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:06:06,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:06:06,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:06:06,472 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:06:06,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,527 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 852 [2023-12-15 23:06:06,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:06:06,527 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:06:06,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:06:06,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:06:06,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,556 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]. [2023-12-15 23:06:06,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,603 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:06:06,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:06:06,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:06:06,604 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:06:06,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2023-12-15 23:06:06,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:06:06,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:06,673 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) [2023-12-15 23:06:06,729 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 [2023-12-15 23:06:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:06:06,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:06:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-15 23:06:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-15 23:06:06,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:06:06,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:06:06,820 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:06:06,821 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:06:07,253 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:06:07,279 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:06:07,280 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-15 23:06:07,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:06:07 BoogieIcfgContainer [2023-12-15 23:06:07,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:06:07,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:06:07,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:06:07,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:06:07,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:06:06" (1/3) ... [2023-12-15 23:06:07,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c90232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:06:07, skipping insertion in model container [2023-12-15 23:06:07,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (2/3) ... [2023-12-15 23:06:07,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c90232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:06:07, skipping insertion in model container [2023-12-15 23:06:07,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:06:07" (3/3) ... [2023-12-15 23:06:07,285 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.2.cil.c [2023-12-15 23:06:07,296 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:06:07,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:06:07,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:06:07,331 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;@4d9fb569, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:06:07,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:06:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 241 states have (on average 1.937759336099585) internal successors, (467), 247 states have internal predecessors, (467), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-15 23:06:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 23:06:07,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:07,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:07,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:07,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1846885785, now seen corresponding path program 1 times [2023-12-15 23:06:07,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529766105] [2023-12-15 23:06:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:07,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:07,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529766105] [2023-12-15 23:06:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529766105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:07,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:07,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:06:07,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755833468] [2023-12-15 23:06:07,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:07,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:07,524 INFO L87 Difference]: Start difference. First operand has 249 states, 241 states have (on average 1.937759336099585) internal successors, (467), 247 states have internal predecessors, (467), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:07,772 INFO L93 Difference]: Finished difference Result 656 states and 1255 transitions. [2023-12-15 23:06:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-15 23:06:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:07,781 INFO L225 Difference]: With dead ends: 656 [2023-12-15 23:06:07,781 INFO L226 Difference]: Without dead ends: 407 [2023-12-15 23:06:07,783 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 [2023-12-15 23:06:07,785 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 243 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:07,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 694 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:06:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-15 23:06:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 400. [2023-12-15 23:06:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 394 states have (on average 1.6370558375634519) internal successors, (645), 398 states have internal predecessors, (645), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 650 transitions. [2023-12-15 23:06:07,825 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 650 transitions. Word has length 26 [2023-12-15 23:06:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:07,825 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 650 transitions. [2023-12-15 23:06:07,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:07,826 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 650 transitions. [2023-12-15 23:06:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-15 23:06:07,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:07,827 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] [2023-12-15 23:06:07,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:06:07,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:07,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:07,828 INFO L85 PathProgramCache]: Analyzing trace with hash 242253487, now seen corresponding path program 1 times [2023-12-15 23:06:07,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:07,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548699434] [2023-12-15 23:06:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:07,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548699434] [2023-12-15 23:06:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548699434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:07,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:07,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:06:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125781376] [2023-12-15 23:06:07,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:07,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:07,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:07,897 INFO L87 Difference]: Start difference. First operand 400 states and 650 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:08,036 INFO L93 Difference]: Finished difference Result 1048 states and 1728 transitions. [2023-12-15 23:06:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:08,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-15 23:06:08,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:08,039 INFO L225 Difference]: With dead ends: 1048 [2023-12-15 23:06:08,039 INFO L226 Difference]: Without dead ends: 661 [2023-12-15 23:06:08,040 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 [2023-12-15 23:06:08,040 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 308 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:08,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 924 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-15 23:06:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 654. [2023-12-15 23:06:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 648 states have (on average 1.6682098765432098) internal successors, (1081), 652 states have internal predecessors, (1081), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1086 transitions. [2023-12-15 23:06:08,059 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1086 transitions. Word has length 36 [2023-12-15 23:06:08,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:08,059 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1086 transitions. [2023-12-15 23:06:08,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1086 transitions. [2023-12-15 23:06:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 23:06:08,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:08,061 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] [2023-12-15 23:06:08,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:06:08,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:08,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1958989152, now seen corresponding path program 1 times [2023-12-15 23:06:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:08,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77193145] [2023-12-15 23:06:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:08,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:08,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77193145] [2023-12-15 23:06:08,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77193145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:08,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:08,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:06:08,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866988528] [2023-12-15 23:06:08,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:08,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:08,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:08,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:08,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:08,106 INFO L87 Difference]: Start difference. First operand 654 states and 1086 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:08,156 INFO L93 Difference]: Finished difference Result 1644 states and 2735 transitions. [2023-12-15 23:06:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:08,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-15 23:06:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:08,159 INFO L225 Difference]: With dead ends: 1644 [2023-12-15 23:06:08,159 INFO L226 Difference]: Without dead ends: 1014 [2023-12-15 23:06:08,160 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 [2023-12-15 23:06:08,161 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 332 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:08,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 734 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-12-15 23:06:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1003. [2023-12-15 23:06:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 997 states have (on average 1.6639919759277833) internal successors, (1659), 1001 states have internal predecessors, (1659), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1664 transitions. [2023-12-15 23:06:08,185 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1664 transitions. Word has length 37 [2023-12-15 23:06:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:08,191 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1664 transitions. [2023-12-15 23:06:08,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1664 transitions. [2023-12-15 23:06:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-15 23:06:08,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:08,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:08,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:06:08,195 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:08,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1906881250, now seen corresponding path program 1 times [2023-12-15 23:06:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:08,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493350831] [2023-12-15 23:06:08,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:08,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493350831] [2023-12-15 23:06:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493350831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:08,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:08,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:06:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080154749] [2023-12-15 23:06:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:08,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:06:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:08,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:06:08,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:06:08,309 INFO L87 Difference]: Start difference. First operand 1003 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:08,702 INFO L93 Difference]: Finished difference Result 3542 states and 5892 transitions. [2023-12-15 23:06:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:06:08,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-15 23:06:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:08,709 INFO L225 Difference]: With dead ends: 3542 [2023-12-15 23:06:08,709 INFO L226 Difference]: Without dead ends: 2563 [2023-12-15 23:06:08,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:06:08,712 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 1097 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:08,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1435 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:06:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2023-12-15 23:06:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2077. [2023-12-15 23:06:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 2071 states have (on average 1.6605504587155964) internal successors, (3439), 2075 states have internal predecessors, (3439), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3444 transitions. [2023-12-15 23:06:08,793 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3444 transitions. Word has length 43 [2023-12-15 23:06:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:08,793 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 3444 transitions. [2023-12-15 23:06:08,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3444 transitions. [2023-12-15 23:06:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 23:06:08,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:08,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:08,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:06:08,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:08,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1797812072, now seen corresponding path program 1 times [2023-12-15 23:06:08,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692169459] [2023-12-15 23:06:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:08,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692169459] [2023-12-15 23:06:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692169459] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:08,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:08,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:06:08,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100966305] [2023-12-15 23:06:08,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:08,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:06:08,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:06:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:06:08,859 INFO L87 Difference]: Start difference. First operand 2077 states and 3444 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:09,188 INFO L93 Difference]: Finished difference Result 6074 states and 9947 transitions. [2023-12-15 23:06:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:06:09,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-15 23:06:09,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:09,198 INFO L225 Difference]: With dead ends: 6074 [2023-12-15 23:06:09,198 INFO L226 Difference]: Without dead ends: 4015 [2023-12-15 23:06:09,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:06:09,201 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 700 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:09,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 931 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:06:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2023-12-15 23:06:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3665. [2023-12-15 23:06:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3659 states have (on average 1.624487564908445) internal successors, (5944), 3663 states have internal predecessors, (5944), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 5949 transitions. [2023-12-15 23:06:09,273 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 5949 transitions. Word has length 50 [2023-12-15 23:06:09,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:09,273 INFO L495 AbstractCegarLoop]: Abstraction has 3665 states and 5949 transitions. [2023-12-15 23:06:09,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 5949 transitions. [2023-12-15 23:06:09,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 23:06:09,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:09,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:09,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:06:09,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:09,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash 346972065, now seen corresponding path program 1 times [2023-12-15 23:06:09,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:09,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589328625] [2023-12-15 23:06:09,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:09,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589328625] [2023-12-15 23:06:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589328625] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:09,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:06:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293663736] [2023-12-15 23:06:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:09,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:09,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:09,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:09,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:09,302 INFO L87 Difference]: Start difference. First operand 3665 states and 5949 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:09,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:09,456 INFO L93 Difference]: Finished difference Result 8702 states and 14082 transitions. [2023-12-15 23:06:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:09,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-15 23:06:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:09,468 INFO L225 Difference]: With dead ends: 8702 [2023-12-15 23:06:09,468 INFO L226 Difference]: Without dead ends: 5059 [2023-12-15 23:06:09,471 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 [2023-12-15 23:06:09,472 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 347 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:09,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 633 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2023-12-15 23:06:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 4783. [2023-12-15 23:06:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 4777 states have (on average 1.6043541971948923) internal successors, (7664), 4781 states have internal predecessors, (7664), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 7669 transitions. [2023-12-15 23:06:09,588 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 7669 transitions. Word has length 50 [2023-12-15 23:06:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:09,588 INFO L495 AbstractCegarLoop]: Abstraction has 4783 states and 7669 transitions. [2023-12-15 23:06:09,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 7669 transitions. [2023-12-15 23:06:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 23:06:09,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:09,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:09,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:06:09,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:09,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 524791694, now seen corresponding path program 1 times [2023-12-15 23:06:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:09,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864066712] [2023-12-15 23:06:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:09,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:09,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864066712] [2023-12-15 23:06:09,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864066712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:09,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:09,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:06:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542532661] [2023-12-15 23:06:09,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:09,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:09,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:09,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:09,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:09,625 INFO L87 Difference]: Start difference. First operand 4783 states and 7669 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:09,882 INFO L93 Difference]: Finished difference Result 11559 states and 18617 transitions. [2023-12-15 23:06:09,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:09,882 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 23:06:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:09,899 INFO L225 Difference]: With dead ends: 11559 [2023-12-15 23:06:09,899 INFO L226 Difference]: Without dead ends: 6798 [2023-12-15 23:06:09,904 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 [2023-12-15 23:06:09,905 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 233 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:09,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 783 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:06:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2023-12-15 23:06:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 5531. [2023-12-15 23:06:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5525 states have (on average 1.5491402714932128) internal successors, (8559), 5529 states have internal predecessors, (8559), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 8564 transitions. [2023-12-15 23:06:10,017 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 8564 transitions. Word has length 55 [2023-12-15 23:06:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:10,017 INFO L495 AbstractCegarLoop]: Abstraction has 5531 states and 8564 transitions. [2023-12-15 23:06:10,017 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 8564 transitions. [2023-12-15 23:06:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 23:06:10,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:10,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:10,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:06:10,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:10,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1311066694, now seen corresponding path program 1 times [2023-12-15 23:06:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:10,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000763232] [2023-12-15 23:06:10,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:10,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:10,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000763232] [2023-12-15 23:06:10,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000763232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:10,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:10,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:06:10,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387131172] [2023-12-15 23:06:10,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:10,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:10,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:10,076 INFO L87 Difference]: Start difference. First operand 5531 states and 8564 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:10,183 INFO L93 Difference]: Finished difference Result 10906 states and 16906 transitions. [2023-12-15 23:06:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:10,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-15 23:06:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:10,196 INFO L225 Difference]: With dead ends: 10906 [2023-12-15 23:06:10,196 INFO L226 Difference]: Without dead ends: 5397 [2023-12-15 23:06:10,202 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 [2023-12-15 23:06:10,202 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 324 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:10,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 397 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5397 states. [2023-12-15 23:06:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5397 to 5397. [2023-12-15 23:06:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 5391 states have (on average 1.5288443702467074) internal successors, (8242), 5395 states have internal predecessors, (8242), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 8247 transitions. [2023-12-15 23:06:10,306 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 8247 transitions. Word has length 57 [2023-12-15 23:06:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:10,306 INFO L495 AbstractCegarLoop]: Abstraction has 5397 states and 8247 transitions. [2023-12-15 23:06:10,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 8247 transitions. [2023-12-15 23:06:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 23:06:10,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:10,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:06:10,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:10,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1296691314, now seen corresponding path program 1 times [2023-12-15 23:06:10,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899108984] [2023-12-15 23:06:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:10,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:10,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899108984] [2023-12-15 23:06:10,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899108984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:10,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:10,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:06:10,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818232036] [2023-12-15 23:06:10,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:10,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:10,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:10,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:10,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:10,365 INFO L87 Difference]: Start difference. First operand 5397 states and 8247 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:10,467 INFO L93 Difference]: Finished difference Result 10419 states and 16042 transitions. [2023-12-15 23:06:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-15 23:06:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:10,481 INFO L225 Difference]: With dead ends: 10419 [2023-12-15 23:06:10,481 INFO L226 Difference]: Without dead ends: 5044 [2023-12-15 23:06:10,486 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 [2023-12-15 23:06:10,488 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 150 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:10,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 824 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5044 states. [2023-12-15 23:06:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5044 to 4377. [2023-12-15 23:06:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4377 states, 4371 states have (on average 1.5536490505605125) internal successors, (6791), 4375 states have internal predecessors, (6791), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4377 states to 4377 states and 6796 transitions. [2023-12-15 23:06:10,621 INFO L78 Accepts]: Start accepts. Automaton has 4377 states and 6796 transitions. Word has length 58 [2023-12-15 23:06:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:10,621 INFO L495 AbstractCegarLoop]: Abstraction has 4377 states and 6796 transitions. [2023-12-15 23:06:10,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4377 states and 6796 transitions. [2023-12-15 23:06:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:06:10,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:10,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:10,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:06:10,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1299520037, now seen corresponding path program 1 times [2023-12-15 23:06:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:10,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567719951] [2023-12-15 23:06:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:10,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:10,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:10,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567719951] [2023-12-15 23:06:10,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567719951] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:10,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:10,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 23:06:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026017799] [2023-12-15 23:06:10,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:10,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 23:06:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 23:06:10,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:10,677 INFO L87 Difference]: Start difference. First operand 4377 states and 6796 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:11,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:11,046 INFO L93 Difference]: Finished difference Result 12782 states and 19835 transitions. [2023-12-15 23:06:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:06:11,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-15 23:06:11,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:11,061 INFO L225 Difference]: With dead ends: 12782 [2023-12-15 23:06:11,062 INFO L226 Difference]: Without dead ends: 8607 [2023-12-15 23:06:11,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:06:11,068 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 908 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:11,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 2171 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:06:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8607 states. [2023-12-15 23:06:11,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8607 to 5921. [2023-12-15 23:06:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5921 states, 5915 states have (on average 1.555874894336433) internal successors, (9203), 5919 states have internal predecessors, (9203), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5921 states to 5921 states and 9208 transitions. [2023-12-15 23:06:11,211 INFO L78 Accepts]: Start accepts. Automaton has 5921 states and 9208 transitions. Word has length 60 [2023-12-15 23:06:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:11,212 INFO L495 AbstractCegarLoop]: Abstraction has 5921 states and 9208 transitions. [2023-12-15 23:06:11,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5921 states and 9208 transitions. [2023-12-15 23:06:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 23:06:11,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:11,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:11,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:06:11,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:11,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:11,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1129675064, now seen corresponding path program 1 times [2023-12-15 23:06:11,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:11,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618631372] [2023-12-15 23:06:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:11,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:11,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:11,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618631372] [2023-12-15 23:06:11,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618631372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:11,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:11,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:06:11,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106907820] [2023-12-15 23:06:11,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:11,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:06:11,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:06:11,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:06:11,282 INFO L87 Difference]: Start difference. First operand 5921 states and 9208 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:11,532 INFO L93 Difference]: Finished difference Result 14290 states and 22055 transitions. [2023-12-15 23:06:11,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:06:11,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 23:06:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:11,544 INFO L225 Difference]: With dead ends: 14290 [2023-12-15 23:06:11,544 INFO L226 Difference]: Without dead ends: 8571 [2023-12-15 23:06:11,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:06:11,552 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 812 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:11,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2704 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:11,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8571 states. [2023-12-15 23:06:11,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8571 to 6261. [2023-12-15 23:06:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 6255 states have (on average 1.5448441247002398) internal successors, (9663), 6259 states have internal predecessors, (9663), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9668 transitions. [2023-12-15 23:06:11,742 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9668 transitions. Word has length 61 [2023-12-15 23:06:11,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:11,742 INFO L495 AbstractCegarLoop]: Abstraction has 6261 states and 9668 transitions. [2023-12-15 23:06:11,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9668 transitions. [2023-12-15 23:06:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:06:11,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:11,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:06:11,744 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:11,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 60038850, now seen corresponding path program 1 times [2023-12-15 23:06:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:11,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049961427] [2023-12-15 23:06:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:11,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:11,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049961427] [2023-12-15 23:06:11,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049961427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:11,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:11,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 23:06:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265373600] [2023-12-15 23:06:11,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:11,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:11,769 INFO L87 Difference]: Start difference. First operand 6261 states and 9668 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:11,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:11,945 INFO L93 Difference]: Finished difference Result 13273 states and 20446 transitions. [2023-12-15 23:06:11,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:11,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:06:11,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:11,955 INFO L225 Difference]: With dead ends: 13273 [2023-12-15 23:06:11,955 INFO L226 Difference]: Without dead ends: 7032 [2023-12-15 23:06:11,965 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 [2023-12-15 23:06:11,965 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 126 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:11,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 732 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7032 states. [2023-12-15 23:06:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7032 to 6946. [2023-12-15 23:06:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6940 states have (on average 1.5377521613832854) internal successors, (10672), 6944 states have internal predecessors, (10672), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10677 transitions. [2023-12-15 23:06:12,141 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10677 transitions. Word has length 74 [2023-12-15 23:06:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:12,141 INFO L495 AbstractCegarLoop]: Abstraction has 6946 states and 10677 transitions. [2023-12-15 23:06:12,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10677 transitions. [2023-12-15 23:06:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 23:06:12,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:12,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:12,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:06:12,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:12,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:12,143 INFO L85 PathProgramCache]: Analyzing trace with hash -891791990, now seen corresponding path program 1 times [2023-12-15 23:06:12,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:12,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203087930] [2023-12-15 23:06:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:12,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:12,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203087930] [2023-12-15 23:06:12,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203087930] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:12,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:12,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:06:12,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133487595] [2023-12-15 23:06:12,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:12,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:06:12,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:12,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:06:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:06:12,176 INFO L87 Difference]: Start difference. First operand 6946 states and 10677 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:12,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:12,518 INFO L93 Difference]: Finished difference Result 18015 states and 27410 transitions. [2023-12-15 23:06:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:06:12,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-15 23:06:12,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:12,533 INFO L225 Difference]: With dead ends: 18015 [2023-12-15 23:06:12,534 INFO L226 Difference]: Without dead ends: 10956 [2023-12-15 23:06:12,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:06:12,543 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 604 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:12,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1119 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:06:12,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10956 states. [2023-12-15 23:06:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10956 to 9663. [2023-12-15 23:06:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9663 states, 9657 states have (on average 1.5003624313969142) internal successors, (14489), 9661 states have internal predecessors, (14489), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9663 states to 9663 states and 14494 transitions. [2023-12-15 23:06:12,781 INFO L78 Accepts]: Start accepts. Automaton has 9663 states and 14494 transitions. Word has length 85 [2023-12-15 23:06:12,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:12,781 INFO L495 AbstractCegarLoop]: Abstraction has 9663 states and 14494 transitions. [2023-12-15 23:06:12,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:12,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9663 states and 14494 transitions. [2023-12-15 23:06:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-15 23:06:12,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:12,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:12,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:06:12,784 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:12,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1043685481, now seen corresponding path program 1 times [2023-12-15 23:06:12,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:12,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741559603] [2023-12-15 23:06:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:12,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:12,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741559603] [2023-12-15 23:06:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741559603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:12,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:12,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:06:12,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719657230] [2023-12-15 23:06:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:12,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:12,815 INFO L87 Difference]: Start difference. First operand 9663 states and 14494 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:12,937 INFO L93 Difference]: Finished difference Result 13764 states and 20698 transitions. [2023-12-15 23:06:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:12,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-15 23:06:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:12,942 INFO L225 Difference]: With dead ends: 13764 [2023-12-15 23:06:12,942 INFO L226 Difference]: Without dead ends: 4111 [2023-12-15 23:06:12,950 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 [2023-12-15 23:06:12,951 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 319 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:12,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 461 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:12,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2023-12-15 23:06:13,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4053. [2023-12-15 23:06:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4053 states, 4047 states have (on average 1.4000494193229553) internal successors, (5666), 4051 states have internal predecessors, (5666), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4053 states to 4053 states and 5671 transitions. [2023-12-15 23:06:13,024 INFO L78 Accepts]: Start accepts. Automaton has 4053 states and 5671 transitions. Word has length 91 [2023-12-15 23:06:13,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:13,024 INFO L495 AbstractCegarLoop]: Abstraction has 4053 states and 5671 transitions. [2023-12-15 23:06:13,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4053 states and 5671 transitions. [2023-12-15 23:06:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-15 23:06:13,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:13,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:13,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:06:13,026 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:13,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash -907817551, now seen corresponding path program 1 times [2023-12-15 23:06:13,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:13,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326489633] [2023-12-15 23:06:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:13,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326489633] [2023-12-15 23:06:13,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326489633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:13,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:13,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:06:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735802633] [2023-12-15 23:06:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:06:13,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:06:13,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:06:13,078 INFO L87 Difference]: Start difference. First operand 4053 states and 5671 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:13,279 INFO L93 Difference]: Finished difference Result 9560 states and 13356 transitions. [2023-12-15 23:06:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 23:06:13,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-15 23:06:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:13,286 INFO L225 Difference]: With dead ends: 9560 [2023-12-15 23:06:13,286 INFO L226 Difference]: Without dead ends: 5671 [2023-12-15 23:06:13,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:06:13,292 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 521 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:13,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 2121 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2023-12-15 23:06:13,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 4055. [2023-12-15 23:06:13,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4055 states, 4049 states have (on average 1.3968881205235861) internal successors, (5656), 4053 states have internal predecessors, (5656), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 5661 transitions. [2023-12-15 23:06:13,379 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 5661 transitions. Word has length 95 [2023-12-15 23:06:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:13,379 INFO L495 AbstractCegarLoop]: Abstraction has 4055 states and 5661 transitions. [2023-12-15 23:06:13,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,379 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 5661 transitions. [2023-12-15 23:06:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-15 23:06:13,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:13,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:06:13,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:13,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash -886618612, now seen corresponding path program 1 times [2023-12-15 23:06:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:13,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128869072] [2023-12-15 23:06:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:13,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128869072] [2023-12-15 23:06:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128869072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:13,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303417690] [2023-12-15 23:06:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:13,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:13,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:13,439 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) [2023-12-15 23:06:13,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:06:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:13,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 23:06:13,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 23:06:13,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:06:13,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303417690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:13,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:06:13,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 23:06:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913003835] [2023-12-15 23:06:13,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:13,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:13,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:13,623 INFO L87 Difference]: Start difference. First operand 4055 states and 5661 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:13,753 INFO L93 Difference]: Finished difference Result 5190 states and 7234 transitions. [2023-12-15 23:06:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:13,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-15 23:06:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:13,759 INFO L225 Difference]: With dead ends: 5190 [2023-12-15 23:06:13,759 INFO L226 Difference]: Without dead ends: 5186 [2023-12-15 23:06:13,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:13,760 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 215 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:13,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 719 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2023-12-15 23:06:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5048. [2023-12-15 23:06:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5042 states have (on average 1.400833002776676) internal successors, (7063), 5046 states have internal predecessors, (7063), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 7068 transitions. [2023-12-15 23:06:13,909 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 7068 transitions. Word has length 97 [2023-12-15 23:06:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:13,910 INFO L495 AbstractCegarLoop]: Abstraction has 5048 states and 7068 transitions. [2023-12-15 23:06:13,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 7068 transitions. [2023-12-15 23:06:13,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-15 23:06:13,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:13,912 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:13,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 23:06:14,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 23:06:14,116 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:14,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1357555119, now seen corresponding path program 1 times [2023-12-15 23:06:14,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:14,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96353405] [2023-12-15 23:06:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:14,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:06:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96353405] [2023-12-15 23:06:14,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96353405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165285085] [2023-12-15 23:06:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:14,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:14,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:14,196 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) [2023-12-15 23:06:14,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:06:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:14,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 23:06:14,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 23:06:14,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:06:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165285085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:14,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:06:14,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-15 23:06:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417547516] [2023-12-15 23:06:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:14,383 INFO L87 Difference]: Start difference. First operand 5048 states and 7068 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:14,511 INFO L93 Difference]: Finished difference Result 8964 states and 12614 transitions. [2023-12-15 23:06:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2023-12-15 23:06:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:14,516 INFO L225 Difference]: With dead ends: 8964 [2023-12-15 23:06:14,516 INFO L226 Difference]: Without dead ends: 3927 [2023-12-15 23:06:14,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:14,520 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 245 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:14,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 380 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:14,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2023-12-15 23:06:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3592. [2023-12-15 23:06:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3586 states have (on average 1.377579475738985) internal successors, (4940), 3590 states have internal predecessors, (4940), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:14,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 4945 transitions. [2023-12-15 23:06:14,626 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 4945 transitions. Word has length 148 [2023-12-15 23:06:14,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:14,626 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 4945 transitions. [2023-12-15 23:06:14,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:14,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 4945 transitions. [2023-12-15 23:06:14,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-15 23:06:14,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:14,628 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:14,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 23:06:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 23:06:14,849 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:14,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:14,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2041407437, now seen corresponding path program 1 times [2023-12-15 23:06:14,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:14,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834925595] [2023-12-15 23:06:14,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 23:06:14,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834925595] [2023-12-15 23:06:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834925595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244030805] [2023-12-15 23:06:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:14,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:14,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:14,953 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) [2023-12-15 23:06:14,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:06:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:15,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 23:06:15,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 23:06:15,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:06:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244030805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:15,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:06:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 23:06:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58938225] [2023-12-15 23:06:15,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:15,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:15,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:15,109 INFO L87 Difference]: Start difference. First operand 3592 states and 4945 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:15,204 INFO L93 Difference]: Finished difference Result 7021 states and 9712 transitions. [2023-12-15 23:06:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-15 23:06:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:15,208 INFO L225 Difference]: With dead ends: 7021 [2023-12-15 23:06:15,208 INFO L226 Difference]: Without dead ends: 3592 [2023-12-15 23:06:15,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:15,210 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 255 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:15,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 352 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2023-12-15 23:06:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3592. [2023-12-15 23:06:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3586 states have (on average 1.3385387618516453) internal successors, (4800), 3590 states have internal predecessors, (4800), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 4805 transitions. [2023-12-15 23:06:15,279 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 4805 transitions. Word has length 151 [2023-12-15 23:06:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:15,279 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 4805 transitions. [2023-12-15 23:06:15,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:15,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 4805 transitions. [2023-12-15 23:06:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 23:06:15,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:15,281 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:15,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:06:15,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 23:06:15,503 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:15,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:15,503 INFO L85 PathProgramCache]: Analyzing trace with hash -293733516, now seen corresponding path program 1 times [2023-12-15 23:06:15,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:15,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939246783] [2023-12-15 23:06:15,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:15,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 23:06:15,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939246783] [2023-12-15 23:06:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939246783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127865522] [2023-12-15 23:06:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:15,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:15,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:15,624 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) [2023-12-15 23:06:15,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 23:06:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:15,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 23:06:15,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 23:06:15,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:06:15,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127865522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:15,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:06:15,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-15 23:06:15,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139448076] [2023-12-15 23:06:15,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:15,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:15,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:15,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:15,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:15,768 INFO L87 Difference]: Start difference. First operand 3592 states and 4805 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:16,030 INFO L93 Difference]: Finished difference Result 8294 states and 11265 transitions. [2023-12-15 23:06:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:16,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-12-15 23:06:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:16,042 INFO L225 Difference]: With dead ends: 8294 [2023-12-15 23:06:16,042 INFO L226 Difference]: Without dead ends: 4865 [2023-12-15 23:06:16,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:06:16,045 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 190 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:16,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 578 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 23:06:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2023-12-15 23:06:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4541. [2023-12-15 23:06:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4535 states have (on average 1.3016538037486218) internal successors, (5903), 4539 states have internal predecessors, (5903), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 5908 transitions. [2023-12-15 23:06:16,144 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 5908 transitions. Word has length 152 [2023-12-15 23:06:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:16,144 INFO L495 AbstractCegarLoop]: Abstraction has 4541 states and 5908 transitions. [2023-12-15 23:06:16,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 5908 transitions. [2023-12-15 23:06:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 23:06:16,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:16,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:16,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 23:06:16,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:16,351 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:16,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:16,351 INFO L85 PathProgramCache]: Analyzing trace with hash -132077224, now seen corresponding path program 1 times [2023-12-15 23:06:16,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:16,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973829303] [2023-12-15 23:06:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:16,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 23:06:16,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:16,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973829303] [2023-12-15 23:06:16,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973829303] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:16,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842190761] [2023-12-15 23:06:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:16,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:16,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:16,553 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) [2023-12-15 23:06:16,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 23:06:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:16,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 23:06:16,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 23:06:16,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:06:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 23:06:16,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842190761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:06:16,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:06:16,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2023-12-15 23:06:16,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661710214] [2023-12-15 23:06:16,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:06:16,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:06:16,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:16,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:06:16,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:06:16,929 INFO L87 Difference]: Start difference. First operand 4541 states and 5908 transitions. Second operand has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:17,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:17,367 INFO L93 Difference]: Finished difference Result 12750 states and 16603 transitions. [2023-12-15 23:06:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 23:06:17,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-15 23:06:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:17,376 INFO L225 Difference]: With dead ends: 12750 [2023-12-15 23:06:17,376 INFO L226 Difference]: Without dead ends: 8372 [2023-12-15 23:06:17,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:06:17,379 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 892 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:17,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 4027 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8372 states. [2023-12-15 23:06:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8372 to 7057. [2023-12-15 23:06:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7057 states, 7051 states have (on average 1.3149907814494397) internal successors, (9272), 7055 states have internal predecessors, (9272), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 9277 transitions. [2023-12-15 23:06:17,557 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 9277 transitions. Word has length 154 [2023-12-15 23:06:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:17,557 INFO L495 AbstractCegarLoop]: Abstraction has 7057 states and 9277 transitions. [2023-12-15 23:06:17,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.3) internal successors, (153), 10 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:17,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 9277 transitions. [2023-12-15 23:06:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-15 23:06:17,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:17,559 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:17,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 23:06:17,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:17,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:17,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash 308126803, now seen corresponding path program 1 times [2023-12-15 23:06:17,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:17,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297685940] [2023-12-15 23:06:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:17,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 98 proven. 99 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 23:06:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297685940] [2023-12-15 23:06:17,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297685940] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:17,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209846370] [2023-12-15 23:06:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:17,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:17,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:17,922 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) [2023-12-15 23:06:17,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 23:06:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:18,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 23:06:18,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 23:06:18,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 23:06:18,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209846370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:18,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 23:06:18,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2023-12-15 23:06:18,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40579065] [2023-12-15 23:06:18,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:18,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:06:18,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:06:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:06:18,236 INFO L87 Difference]: Start difference. First operand 7057 states and 9277 transitions. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:18,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:18,596 INFO L93 Difference]: Finished difference Result 14750 states and 19332 transitions. [2023-12-15 23:06:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 23:06:18,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2023-12-15 23:06:18,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:18,606 INFO L225 Difference]: With dead ends: 14750 [2023-12-15 23:06:18,606 INFO L226 Difference]: Without dead ends: 7853 [2023-12-15 23:06:18,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-15 23:06:18,609 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 968 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:18,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 2091 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7853 states. [2023-12-15 23:06:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7853 to 6941. [2023-12-15 23:06:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6941 states, 6935 states have (on average 1.313914924297044) internal successors, (9112), 6939 states have internal predecessors, (9112), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:18,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6941 states to 6941 states and 9117 transitions. [2023-12-15 23:06:18,763 INFO L78 Accepts]: Start accepts. Automaton has 6941 states and 9117 transitions. Word has length 249 [2023-12-15 23:06:18,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:18,764 INFO L495 AbstractCegarLoop]: Abstraction has 6941 states and 9117 transitions. [2023-12-15 23:06:18,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6941 states and 9117 transitions. [2023-12-15 23:06:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2023-12-15 23:06:18,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:18,766 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:18,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 23:06:18,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:18,971 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:18,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1590507305, now seen corresponding path program 1 times [2023-12-15 23:06:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:18,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656772770] [2023-12-15 23:06:18,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-15 23:06:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656772770] [2023-12-15 23:06:19,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656772770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:19,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:19,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:06:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387388066] [2023-12-15 23:06:19,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:06:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:06:19,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:06:19,038 INFO L87 Difference]: Start difference. First operand 6941 states and 9117 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:19,162 INFO L93 Difference]: Finished difference Result 7759 states and 10041 transitions. [2023-12-15 23:06:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:06:19,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2023-12-15 23:06:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:19,164 INFO L225 Difference]: With dead ends: 7759 [2023-12-15 23:06:19,164 INFO L226 Difference]: Without dead ends: 874 [2023-12-15 23:06:19,168 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 [2023-12-15 23:06:19,169 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 124 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:19,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 344 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:19,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2023-12-15 23:06:19,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 872. [2023-12-15 23:06:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 868 states have (on average 1.087557603686636) internal successors, (944), 870 states have internal predecessors, (944), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 947 transitions. [2023-12-15 23:06:19,197 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 947 transitions. Word has length 250 [2023-12-15 23:06:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:19,197 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 947 transitions. [2023-12-15 23:06:19,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 947 transitions. [2023-12-15 23:06:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-15 23:06:19,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:19,199 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:19,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:06:19,199 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:19,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:19,200 INFO L85 PathProgramCache]: Analyzing trace with hash -985731691, now seen corresponding path program 1 times [2023-12-15 23:06:19,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:19,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567538880] [2023-12-15 23:06:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-15 23:06:19,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567538880] [2023-12-15 23:06:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567538880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:19,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:19,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:06:19,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164678761] [2023-12-15 23:06:19,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:19,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 23:06:19,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:19,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 23:06:19,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:06:19,325 INFO L87 Difference]: Start difference. First operand 872 states and 947 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:19,454 INFO L93 Difference]: Finished difference Result 1169 states and 1268 transitions. [2023-12-15 23:06:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-15 23:06:19,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2023-12-15 23:06:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:19,457 INFO L225 Difference]: With dead ends: 1169 [2023-12-15 23:06:19,457 INFO L226 Difference]: Without dead ends: 885 [2023-12-15 23:06:19,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:06:19,458 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 215 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:19,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1344 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-15 23:06:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 870. [2023-12-15 23:06:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 866 states have (on average 1.0831408775981524) internal successors, (938), 868 states have internal predecessors, (938), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 941 transitions. [2023-12-15 23:06:19,494 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 941 transitions. Word has length 251 [2023-12-15 23:06:19,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:19,495 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 941 transitions. [2023-12-15 23:06:19,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,495 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 941 transitions. [2023-12-15 23:06:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-15 23:06:19,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:19,497 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:19,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:06:19,497 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:19,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash 7829070, now seen corresponding path program 1 times [2023-12-15 23:06:19,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:19,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988548244] [2023-12-15 23:06:19,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:19,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-15 23:06:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988548244] [2023-12-15 23:06:19,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988548244] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:06:19,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:06:19,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:06:19,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042570206] [2023-12-15 23:06:19,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:06:19,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:06:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:06:19,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:06:19,567 INFO L87 Difference]: Start difference. First operand 870 states and 941 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:19,627 INFO L93 Difference]: Finished difference Result 1147 states and 1237 transitions. [2023-12-15 23:06:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:06:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2023-12-15 23:06:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:19,629 INFO L225 Difference]: With dead ends: 1147 [2023-12-15 23:06:19,629 INFO L226 Difference]: Without dead ends: 859 [2023-12-15 23:06:19,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:06:19,630 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 170 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:19,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 768 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:06:19,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-12-15 23:06:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 853. [2023-12-15 23:06:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 850 states have (on average 1.0658823529411765) internal successors, (906), 851 states have internal predecessors, (906), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 908 transitions. [2023-12-15 23:06:19,653 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 908 transitions. Word has length 252 [2023-12-15 23:06:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:19,653 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 908 transitions. [2023-12-15 23:06:19,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:19,653 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 908 transitions. [2023-12-15 23:06:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-12-15 23:06:19,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:19,656 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:19,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:06:19,656 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:19,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1534330045, now seen corresponding path program 1 times [2023-12-15 23:06:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:19,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603731353] [2023-12-15 23:06:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 37 proven. 137 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-15 23:06:20,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603731353] [2023-12-15 23:06:20,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603731353] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996164020] [2023-12-15 23:06:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:20,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:20,328 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) [2023-12-15 23:06:20,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 23:06:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:20,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-15 23:06:20,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 39 proven. 119 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-15 23:06:20,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:06:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 15 proven. 143 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-15 23:06:21,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996164020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:06:21,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:06:21,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 28 [2023-12-15 23:06:21,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735923089] [2023-12-15 23:06:21,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:06:21,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 23:06:21,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 23:06:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2023-12-15 23:06:21,247 INFO L87 Difference]: Start difference. First operand 853 states and 908 transitions. Second operand has 28 states, 28 states have (on average 13.928571428571429) internal successors, (390), 28 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:21,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:21,709 INFO L93 Difference]: Finished difference Result 867 states and 921 transitions. [2023-12-15 23:06:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 23:06:21,710 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 13.928571428571429) internal successors, (390), 28 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 308 [2023-12-15 23:06:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:21,711 INFO L225 Difference]: With dead ends: 867 [2023-12-15 23:06:21,711 INFO L226 Difference]: Without dead ends: 864 [2023-12-15 23:06:21,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=1603, Unknown=0, NotChecked=0, Total=1806 [2023-12-15 23:06:21,712 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 722 mSDsluCounter, 5646 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 6000 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:21,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 6000 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:06:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2023-12-15 23:06:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 853. [2023-12-15 23:06:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 850 states have (on average 1.0647058823529412) internal successors, (905), 851 states have internal predecessors, (905), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 907 transitions. [2023-12-15 23:06:21,735 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 907 transitions. Word has length 308 [2023-12-15 23:06:21,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:21,736 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 907 transitions. [2023-12-15 23:06:21,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.928571428571429) internal successors, (390), 28 states have internal predecessors, (390), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 907 transitions. [2023-12-15 23:06:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-12-15 23:06:21,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:21,739 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:21,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 23:06:21,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:21,968 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:21,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:21,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1966940543, now seen corresponding path program 1 times [2023-12-15 23:06:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:21,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239155739] [2023-12-15 23:06:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:21,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:22,211 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 135 proven. 45 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-15 23:06:22,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:22,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239155739] [2023-12-15 23:06:22,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239155739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:22,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959576437] [2023-12-15 23:06:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:22,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:22,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:22,217 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) [2023-12-15 23:06:22,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 23:06:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:22,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 23:06:22,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 135 proven. 45 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-15 23:06:22,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:06:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 135 proven. 45 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-15 23:06:22,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959576437] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:06:22,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:06:22,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2023-12-15 23:06:22,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82316304] [2023-12-15 23:06:22,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:06:22,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 23:06:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 23:06:22,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-12-15 23:06:22,700 INFO L87 Difference]: Start difference. First operand 853 states and 907 transitions. Second operand has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:22,856 INFO L93 Difference]: Finished difference Result 958 states and 1015 transitions. [2023-12-15 23:06:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 23:06:22,856 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2023-12-15 23:06:22,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:22,864 INFO L225 Difference]: With dead ends: 958 [2023-12-15 23:06:22,864 INFO L226 Difference]: Without dead ends: 860 [2023-12-15 23:06:22,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:06:22,865 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 421 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:22,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2173 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:06:22,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2023-12-15 23:06:22,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 852. [2023-12-15 23:06:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 850 states have (on average 1.06) internal successors, (901), 850 states have internal predecessors, (901), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 902 transitions. [2023-12-15 23:06:22,895 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 902 transitions. Word has length 352 [2023-12-15 23:06:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:22,895 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 902 transitions. [2023-12-15 23:06:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.2) internal successors, (262), 10 states have internal predecessors, (262), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 902 transitions. [2023-12-15 23:06:22,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-15 23:06:22,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:06:22,898 INFO L195 NwaCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:06:22,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 23:06:23,103 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,SelfDestructingSolverStorable25 [2023-12-15 23:06:23,104 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:06:23,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:06:23,104 INFO L85 PathProgramCache]: Analyzing trace with hash -711226123, now seen corresponding path program 1 times [2023-12-15 23:06:23,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:06:23,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965864968] [2023-12-15 23:06:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:06:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 72 proven. 342 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 23:06:23,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:06:23,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965864968] [2023-12-15 23:06:23,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965864968] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:06:23,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241076289] [2023-12-15 23:06:23,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:06:23,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:06:23,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:06:23,854 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) [2023-12-15 23:06:23,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 23:06:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:06:24,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-15 23:06:24,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:06:24,713 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 89 proven. 325 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 23:06:24,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:06:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 20 proven. 394 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 23:06:25,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241076289] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:06:25,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:06:25,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 33 [2023-12-15 23:06:25,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943416114] [2023-12-15 23:06:25,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:06:25,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-15 23:06:25,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:06:25,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-15 23:06:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2023-12-15 23:06:25,083 INFO L87 Difference]: Start difference. First operand 852 states and 902 transitions. Second operand has 33 states, 33 states have (on average 18.96969696969697) internal successors, (626), 33 states have internal predecessors, (626), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:06:25,740 INFO L93 Difference]: Finished difference Result 860 states and 910 transitions. [2023-12-15 23:06:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 23:06:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 18.96969696969697) internal successors, (626), 33 states have internal predecessors, (626), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 410 [2023-12-15 23:06:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:06:25,741 INFO L225 Difference]: With dead ends: 860 [2023-12-15 23:06:25,741 INFO L226 Difference]: Without dead ends: 0 [2023-12-15 23:06:25,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 812 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=290, Invalid=2902, Unknown=0, NotChecked=0, Total=3192 [2023-12-15 23:06:25,742 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 833 mSDsluCounter, 10472 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 10956 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:06:25,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 10956 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 23:06:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-15 23:06:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-15 23:06:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-15 23:06:25,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 410 [2023-12-15 23:06:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:06:25,743 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-15 23:06:25,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 18.96969696969697) internal successors, (626), 33 states have internal predecessors, (626), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:06:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-15 23:06:25,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-15 23:06:25,745 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:06:25,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 23:06:25,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-15 23:06:25,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 23:06:35,631 WARN L293 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 260 DAG size of output: 377 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-15 23:07:06,739 WARN L293 SmtUtils]: Spent 30.42s on a formula simplification. DAG size of input: 199 DAG size of output: 287 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-15 23:07:13,664 WARN L235 SmtUtils]: Removed 5 from assertion stack [2023-12-15 23:07:13,664 WARN L619 AbstractCegarLoop]: Verification canceled: while SimplifyDDAWithTimeout was simplifying term of DAG size 274 for 277ms.. [2023-12-15 23:07:13,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-15 23:07:13,673 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-15 23:07:13,677 INFO L158 Benchmark]: Toolchain (without parser) took 67501.66ms. Allocated memory was 324.0MB in the beginning and 1.3GB in the end (delta: 945.8MB). Free memory was 265.8MB in the beginning and 958.2MB in the end (delta: -692.5MB). Peak memory consumption was 254.3MB. Max. memory is 8.0GB. [2023-12-15 23:07:13,677 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:07:13,677 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.44ms. Allocated memory is still 324.0MB. Free memory was 265.8MB in the beginning and 244.3MB in the end (delta: 21.4MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-15 23:07:13,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.35ms. Allocated memory is still 324.0MB. Free memory was 244.3MB in the beginning and 240.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:07:13,678 INFO L158 Benchmark]: Boogie Preprocessor took 76.00ms. Allocated memory is still 324.0MB. Free memory was 240.9MB in the beginning and 290.3MB in the end (delta: -49.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 23:07:13,678 INFO L158 Benchmark]: RCFGBuilder took 676.05ms. Allocated memory is still 324.0MB. Free memory was 290.3MB in the beginning and 238.9MB in the end (delta: 51.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2023-12-15 23:07:13,678 INFO L158 Benchmark]: TraceAbstraction took 66394.80ms. Allocated memory was 324.0MB in the beginning and 1.3GB in the end (delta: 945.8MB). Free memory was 238.4MB in the beginning and 958.2MB in the end (delta: -719.8MB). Peak memory consumption was 226.0MB. Max. memory is 8.0GB. [2023-12-15 23:07:13,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 295.44ms. Allocated memory is still 324.0MB. Free memory was 265.8MB in the beginning and 244.3MB in the end (delta: 21.4MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.35ms. Allocated memory is still 324.0MB. Free memory was 244.3MB in the beginning and 240.9MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 76.00ms. Allocated memory is still 324.0MB. Free memory was 240.9MB in the beginning and 290.3MB in the end (delta: -49.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 676.05ms. Allocated memory is still 324.0MB. Free memory was 290.3MB in the beginning and 238.9MB in the end (delta: 51.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. * TraceAbstraction took 66394.80ms. Allocated memory was 324.0MB in the beginning and 1.3GB in the end (delta: 945.8MB). Free memory was 238.4MB in the beginning and 958.2MB in the end (delta: -719.8MB). Peak memory consumption was 226.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-14-10-3-10-9-4-4-5-9-5-9-5-9-4-9-5-9-5-9-4-9-4-9-4-4-4-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-35-10-9-10-9-4-9-5-9-5-4-5-9-4-9-5-9-5-9-4-9-4-9-4-4-4-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown