/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:12:03,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:12:03,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:12:03,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:12:03,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:12:03,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:12:03,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:12:03,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:12:03,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:12:03,757 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:12:03,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:12:03,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:12:03,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:12:03,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:12:03,758 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:12:03,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:12:03,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:12:03,759 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:12:03,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:12:03,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:12:03,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:12:03,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:12:03,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:12:03,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:12:03,763 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:12:03,763 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:12:03,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:12:03,764 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:12:03,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:12:03,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:12:03,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:12:03,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:12:03,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:12:03,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:12:03,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:12:03,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:12:03,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:12:03,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:12:03,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:12:03,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:12:03,766 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:12:03,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:12:03,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:12:03,770 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:12:03,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:12:03,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:12:03,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:12:03,958 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:12:03,958 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:12:03,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2023-12-21 11:12:04,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:12:05,145 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:12:05,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/mem_slave_tlm.4.cil.c [2023-12-21 11:12:05,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265b08f46/681d5b1106664c27b3f2c7b5d6ab3ee9/FLAG81794a1e2 [2023-12-21 11:12:05,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/265b08f46/681d5b1106664c27b3f2c7b5d6ab3ee9 [2023-12-21 11:12:05,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:12:05,176 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:12:05,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:12:05,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:12:05,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:12:05,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b27fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05, skipping insertion in model container [2023-12-21 11:12:05,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:12:05,302 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.4.cil.c[646,659] [2023-12-21 11:12:05,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:12:05,400 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:12:05,407 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.4.cil.c[646,659] [2023-12-21 11:12:05,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:12:05,457 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:12:05,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05 WrapperNode [2023-12-21 11:12:05,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:12:05,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:12:05,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:12:05,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:12:05,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,497 INFO L138 Inliner]: procedures = 19, calls = 18, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 862 [2023-12-21 11:12:05,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:12:05,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:12:05,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:12:05,509 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:12:05,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,531 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]. [2023-12-21 11:12:05,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:12:05,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:12:05,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:12:05,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:12:05,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (1/1) ... [2023-12-21 11:12:05,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:12:05,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:05,584 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) [2023-12-21 11:12:05,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:12:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:12:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-21 11:12:05,628 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-21 11:12:05,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:12:05,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:12:05,601 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 [2023-12-21 11:12:05,700 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:12:05,702 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:12:06,268 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:12:06,317 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:12:06,317 INFO L309 CfgBuilder]: Removed 13 assume(true) statements. [2023-12-21 11:12:06,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:12:06 BoogieIcfgContainer [2023-12-21 11:12:06,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:12:06,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:12:06,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:12:06,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:12:06,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:12:05" (1/3) ... [2023-12-21 11:12:06,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a3ba06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:12:06, skipping insertion in model container [2023-12-21 11:12:06,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:12:05" (2/3) ... [2023-12-21 11:12:06,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a3ba06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:12:06, skipping insertion in model container [2023-12-21 11:12:06,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:12:06" (3/3) ... [2023-12-21 11:12:06,325 INFO L112 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.c [2023-12-21 11:12:06,335 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:12:06,336 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:12:06,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:12:06,390 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;@251a0848, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:12:06,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:12:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 245 states have (on average 1.9387755102040816) internal successors, (475), 251 states have internal predecessors, (475), 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) [2023-12-21 11:12:06,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-21 11:12:06,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:06,406 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] [2023-12-21 11:12:06,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:06,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1837280988, now seen corresponding path program 1 times [2023-12-21 11:12:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:06,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379097436] [2023-12-21 11:12:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:06,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:06,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379097436] [2023-12-21 11:12:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379097436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:06,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:06,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:12:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430938663] [2023-12-21 11:12:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:06,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:06,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:06,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:06,708 INFO L87 Difference]: Start difference. First operand has 253 states, 245 states have (on average 1.9387755102040816) internal successors, (475), 251 states have internal predecessors, (475), 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) [2023-12-21 11:12:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:07,046 INFO L93 Difference]: Finished difference Result 668 states and 1279 transitions. [2023-12-21 11:12:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:07,048 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 [2023-12-21 11:12:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:07,063 INFO L225 Difference]: With dead ends: 668 [2023-12-21 11:12:07,064 INFO L226 Difference]: Without dead ends: 415 [2023-12-21 11:12:07,066 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 [2023-12-21 11:12:07,069 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 251 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:07,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 710 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:12:07,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-12-21 11:12:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 408. [2023-12-21 11:12:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 402 states have (on average 1.644278606965174) internal successors, (661), 406 states have internal predecessors, (661), 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) [2023-12-21 11:12:07,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 666 transitions. [2023-12-21 11:12:07,120 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 666 transitions. Word has length 26 [2023-12-21 11:12:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:07,121 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 666 transitions. [2023-12-21 11:12:07,121 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) [2023-12-21 11:12:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 666 transitions. [2023-12-21 11:12:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 11:12:07,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:07,124 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] [2023-12-21 11:12:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:12:07,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:07,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash 410826932, now seen corresponding path program 1 times [2023-12-21 11:12:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:07,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594762656] [2023-12-21 11:12:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:07,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:07,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:07,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594762656] [2023-12-21 11:12:07,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594762656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:07,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:07,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:12:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325399226] [2023-12-21 11:12:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:07,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:07,179 INFO L87 Difference]: Start difference. First operand 408 states and 666 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-12-21 11:12:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:07,300 INFO L93 Difference]: Finished difference Result 1072 states and 1776 transitions. [2023-12-21 11:12:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:07,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 38 [2023-12-21 11:12:07,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:07,303 INFO L225 Difference]: With dead ends: 1072 [2023-12-21 11:12:07,303 INFO L226 Difference]: Without dead ends: 677 [2023-12-21 11:12:07,306 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 [2023-12-21 11:12:07,307 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 316 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 940 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 [2023-12-21 11:12:07,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 940 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2023-12-21 11:12:07,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 670. [2023-12-21 11:12:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 664 states have (on average 1.6762048192771084) internal successors, (1113), 668 states have internal predecessors, (1113), 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) [2023-12-21 11:12:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1118 transitions. [2023-12-21 11:12:07,342 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1118 transitions. Word has length 38 [2023-12-21 11:12:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:07,342 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1118 transitions. [2023-12-21 11:12:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-12-21 11:12:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1118 transitions. [2023-12-21 11:12:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 11:12:07,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:07,348 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] [2023-12-21 11:12:07,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:12:07,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:07,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash 73427941, now seen corresponding path program 1 times [2023-12-21 11:12:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351490829] [2023-12-21 11:12:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:07,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:07,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351490829] [2023-12-21 11:12:07,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351490829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:07,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:07,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:12:07,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316676169] [2023-12-21 11:12:07,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:07,405 INFO L87 Difference]: Start difference. First operand 670 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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) [2023-12-21 11:12:07,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:07,475 INFO L93 Difference]: Finished difference Result 1676 states and 2799 transitions. [2023-12-21 11:12:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:07,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 39 [2023-12-21 11:12:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:07,481 INFO L225 Difference]: With dead ends: 1676 [2023-12-21 11:12:07,481 INFO L226 Difference]: Without dead ends: 1030 [2023-12-21 11:12:07,483 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 [2023-12-21 11:12:07,486 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 340 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 742 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 [2023-12-21 11:12:07,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 742 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-12-21 11:12:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1019. [2023-12-21 11:12:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1013 states have (on average 1.6692991115498519) internal successors, (1691), 1017 states have internal predecessors, (1691), 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) [2023-12-21 11:12:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1696 transitions. [2023-12-21 11:12:07,522 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1696 transitions. Word has length 39 [2023-12-21 11:12:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:07,528 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1696 transitions. [2023-12-21 11:12:07,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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) [2023-12-21 11:12:07,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1696 transitions. [2023-12-21 11:12:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-21 11:12:07,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:07,531 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] [2023-12-21 11:12:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:12:07,532 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:07,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:07,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1803426404, now seen corresponding path program 1 times [2023-12-21 11:12:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:07,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129077327] [2023-12-21 11:12:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:07,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:07,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129077327] [2023-12-21 11:12:07,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129077327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:07,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:07,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:12:07,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013441732] [2023-12-21 11:12:07,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:07,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:12:07,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:07,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:12:07,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:12:07,626 INFO L87 Difference]: Start difference. First operand 1019 states and 1696 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) [2023-12-21 11:12:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:08,009 INFO L93 Difference]: Finished difference Result 3614 states and 6036 transitions. [2023-12-21 11:12:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:12:08,009 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 [2023-12-21 11:12:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:08,016 INFO L225 Difference]: With dead ends: 3614 [2023-12-21 11:12:08,016 INFO L226 Difference]: Without dead ends: 2619 [2023-12-21 11:12:08,019 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 [2023-12-21 11:12:08,023 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1121 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1491 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 [2023-12-21 11:12:08,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1491 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:12:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2023-12-21 11:12:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2125. [2023-12-21 11:12:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2125 states, 2119 states have (on average 1.6682397357243983) internal successors, (3535), 2123 states have internal predecessors, (3535), 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) [2023-12-21 11:12:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2125 states to 2125 states and 3540 transitions. [2023-12-21 11:12:08,069 INFO L78 Accepts]: Start accepts. Automaton has 2125 states and 3540 transitions. Word has length 43 [2023-12-21 11:12:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:08,069 INFO L495 AbstractCegarLoop]: Abstraction has 2125 states and 3540 transitions. [2023-12-21 11:12:08,069 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) [2023-12-21 11:12:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2125 states and 3540 transitions. [2023-12-21 11:12:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:12:08,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:08,070 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] [2023-12-21 11:12:08,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:12:08,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:08,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:08,070 INFO L85 PathProgramCache]: Analyzing trace with hash 991278223, now seen corresponding path program 1 times [2023-12-21 11:12:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:08,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455184166] [2023-12-21 11:12:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:08,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:08,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:08,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455184166] [2023-12-21 11:12:08,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455184166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:08,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:08,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:12:08,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135531989] [2023-12-21 11:12:08,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:08,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:08,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:08,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:08,104 INFO L87 Difference]: Start difference. First operand 2125 states and 3540 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) 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) [2023-12-21 11:12:08,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:08,237 INFO L93 Difference]: Finished difference Result 5935 states and 9852 transitions. [2023-12-21 11:12:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:08,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 [2023-12-21 11:12:08,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:08,247 INFO L225 Difference]: With dead ends: 5935 [2023-12-21 11:12:08,247 INFO L226 Difference]: Without dead ends: 3828 [2023-12-21 11:12:08,250 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 [2023-12-21 11:12:08,250 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 376 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:08,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 712 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2023-12-21 11:12:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 3761. [2023-12-21 11:12:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3755 states have (on average 1.6340878828229028) internal successors, (6136), 3759 states have internal predecessors, (6136), 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) [2023-12-21 11:12:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 6141 transitions. [2023-12-21 11:12:08,331 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 6141 transitions. Word has length 50 [2023-12-21 11:12:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:08,332 INFO L495 AbstractCegarLoop]: Abstraction has 3761 states and 6141 transitions. [2023-12-21 11:12:08,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-12-21 11:12:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 6141 transitions. [2023-12-21 11:12:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:12:08,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:08,333 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] [2023-12-21 11:12:08,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:12:08,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:08,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1158904936, now seen corresponding path program 1 times [2023-12-21 11:12:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617569718] [2023-12-21 11:12:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:08,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:08,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617569718] [2023-12-21 11:12:08,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617569718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:08,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:08,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:12:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794784355] [2023-12-21 11:12:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:08,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:08,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:08,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:08,391 INFO L87 Difference]: Start difference. First operand 3761 states and 6141 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) [2023-12-21 11:12:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:08,536 INFO L93 Difference]: Finished difference Result 8942 states and 14562 transitions. [2023-12-21 11:12:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:08,536 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 [2023-12-21 11:12:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:08,549 INFO L225 Difference]: With dead ends: 8942 [2023-12-21 11:12:08,550 INFO L226 Difference]: Without dead ends: 5203 [2023-12-21 11:12:08,554 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 [2023-12-21 11:12:08,556 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 355 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:08,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 649 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:08,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2023-12-21 11:12:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 4927. [2023-12-21 11:12:08,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4927 states, 4921 states have (on average 1.6159317211948792) internal successors, (7952), 4925 states have internal predecessors, (7952), 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) [2023-12-21 11:12:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4927 states to 4927 states and 7957 transitions. [2023-12-21 11:12:08,671 INFO L78 Accepts]: Start accepts. Automaton has 4927 states and 7957 transitions. Word has length 50 [2023-12-21 11:12:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:08,672 INFO L495 AbstractCegarLoop]: Abstraction has 4927 states and 7957 transitions. [2023-12-21 11:12:08,672 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) [2023-12-21 11:12:08,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4927 states and 7957 transitions. [2023-12-21 11:12:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 11:12:08,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:08,674 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] [2023-12-21 11:12:08,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:12:08,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:08,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1084631645, now seen corresponding path program 1 times [2023-12-21 11:12:08,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:08,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927742691] [2023-12-21 11:12:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:08,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:08,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:08,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927742691] [2023-12-21 11:12:08,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927742691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:08,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:08,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:12:08,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843780361] [2023-12-21 11:12:08,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:08,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:08,728 INFO L87 Difference]: Start difference. First operand 4927 states and 7957 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-12-21 11:12:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:09,009 INFO L93 Difference]: Finished difference Result 11919 states and 19337 transitions. [2023-12-21 11:12:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:09,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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 [2023-12-21 11:12:09,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:09,028 INFO L225 Difference]: With dead ends: 11919 [2023-12-21 11:12:09,028 INFO L226 Difference]: Without dead ends: 7014 [2023-12-21 11:12:09,033 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 [2023-12-21 11:12:09,034 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 241 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 799 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 [2023-12-21 11:12:09,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 799 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:12:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2023-12-21 11:12:09,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 5699. [2023-12-21 11:12:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5693 states have (on average 1.562445108027402) internal successors, (8895), 5697 states have internal predecessors, (8895), 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) [2023-12-21 11:12:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 8900 transitions. [2023-12-21 11:12:09,213 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 8900 transitions. Word has length 57 [2023-12-21 11:12:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:09,214 INFO L495 AbstractCegarLoop]: Abstraction has 5699 states and 8900 transitions. [2023-12-21 11:12:09,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 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) [2023-12-21 11:12:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 8900 transitions. [2023-12-21 11:12:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 11:12:09,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:09,216 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] [2023-12-21 11:12:09,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:12:09,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:09,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1961685769, now seen corresponding path program 1 times [2023-12-21 11:12:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:09,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702106236] [2023-12-21 11:12:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:09,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:09,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:09,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702106236] [2023-12-21 11:12:09,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702106236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:09,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:09,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:12:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459383610] [2023-12-21 11:12:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:09,276 INFO L87 Difference]: Start difference. First operand 5699 states and 8900 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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) [2023-12-21 11:12:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:09,408 INFO L93 Difference]: Finished difference Result 11242 states and 17578 transitions. [2023-12-21 11:12:09,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:09,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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 59 [2023-12-21 11:12:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:09,433 INFO L225 Difference]: With dead ends: 11242 [2023-12-21 11:12:09,434 INFO L226 Difference]: Without dead ends: 5565 [2023-12-21 11:12:09,441 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 [2023-12-21 11:12:09,442 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 332 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 405 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 [2023-12-21 11:12:09,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 405 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2023-12-21 11:12:09,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5565. [2023-12-21 11:12:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5565 states, 5559 states have (on average 1.543083288361216) internal successors, (8578), 5563 states have internal predecessors, (8578), 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) [2023-12-21 11:12:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 8583 transitions. [2023-12-21 11:12:09,562 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 8583 transitions. Word has length 59 [2023-12-21 11:12:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:09,562 INFO L495 AbstractCegarLoop]: Abstraction has 5565 states and 8583 transitions. [2023-12-21 11:12:09,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 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) [2023-12-21 11:12:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 8583 transitions. [2023-12-21 11:12:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 11:12:09,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:09,565 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] [2023-12-21 11:12:09,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:12:09,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:09,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash 514755726, now seen corresponding path program 1 times [2023-12-21 11:12:09,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:09,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908805013] [2023-12-21 11:12:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:09,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:09,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908805013] [2023-12-21 11:12:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908805013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:09,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:09,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:12:09,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615170311] [2023-12-21 11:12:09,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:09,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:09,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:09,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:09,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:09,620 INFO L87 Difference]: Start difference. First operand 5565 states and 8583 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2023-12-21 11:12:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:09,750 INFO L93 Difference]: Finished difference Result 10707 states and 16618 transitions. [2023-12-21 11:12:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:09,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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 [2023-12-21 11:12:09,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:09,759 INFO L225 Difference]: With dead ends: 10707 [2023-12-21 11:12:09,759 INFO L226 Difference]: Without dead ends: 5164 [2023-12-21 11:12:09,765 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 [2023-12-21 11:12:09,766 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 150 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:09,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 839 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5164 states. [2023-12-21 11:12:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5164 to 4497. [2023-12-21 11:12:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4497 states, 4491 states have (on average 1.5655755956357158) internal successors, (7031), 4495 states have internal predecessors, (7031), 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) [2023-12-21 11:12:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 7036 transitions. [2023-12-21 11:12:09,844 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 7036 transitions. Word has length 60 [2023-12-21 11:12:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:09,844 INFO L495 AbstractCegarLoop]: Abstraction has 4497 states and 7036 transitions. [2023-12-21 11:12:09,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 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) [2023-12-21 11:12:09,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 7036 transitions. [2023-12-21 11:12:09,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 11:12:09,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:09,845 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, 1] [2023-12-21 11:12:09,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:12:09,846 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:09,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash 951806806, now seen corresponding path program 1 times [2023-12-21 11:12:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048689835] [2023-12-21 11:12:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048689835] [2023-12-21 11:12:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048689835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:09,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:12:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263266953] [2023-12-21 11:12:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:09,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:12:09,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:09,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:12:09,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:09,907 INFO L87 Difference]: Start difference. First operand 4497 states and 7036 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2023-12-21 11:12:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:10,309 INFO L93 Difference]: Finished difference Result 13082 states and 20435 transitions. [2023-12-21 11:12:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 11:12:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 62 [2023-12-21 11:12:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:10,323 INFO L225 Difference]: With dead ends: 13082 [2023-12-21 11:12:10,323 INFO L226 Difference]: Without dead ends: 8787 [2023-12-21 11:12:10,330 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 [2023-12-21 11:12:10,330 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 920 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 2207 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 [2023-12-21 11:12:10,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 2207 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:12:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8787 states. [2023-12-21 11:12:10,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8787 to 6041. [2023-12-21 11:12:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6041 states, 6035 states have (on average 1.5647058823529412) internal successors, (9443), 6039 states have internal predecessors, (9443), 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) [2023-12-21 11:12:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6041 states to 6041 states and 9448 transitions. [2023-12-21 11:12:10,495 INFO L78 Accepts]: Start accepts. Automaton has 6041 states and 9448 transitions. Word has length 62 [2023-12-21 11:12:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:10,496 INFO L495 AbstractCegarLoop]: Abstraction has 6041 states and 9448 transitions. [2023-12-21 11:12:10,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2023-12-21 11:12:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6041 states and 9448 transitions. [2023-12-21 11:12:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:12:10,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:10,497 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, 1, 1] [2023-12-21 11:12:10,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:12:10,498 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:10,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash 704541015, now seen corresponding path program 1 times [2023-12-21 11:12:10,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:10,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898392963] [2023-12-21 11:12:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:10,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:10,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:10,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898392963] [2023-12-21 11:12:10,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898392963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:10,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:10,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:12:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880682034] [2023-12-21 11:12:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:10,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:12:10,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:12:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:12:10,565 INFO L87 Difference]: Start difference. First operand 6041 states and 9448 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2023-12-21 11:12:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:10,863 INFO L93 Difference]: Finished difference Result 14530 states and 22535 transitions. [2023-12-21 11:12:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 11:12:10,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 63 [2023-12-21 11:12:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:10,876 INFO L225 Difference]: With dead ends: 14530 [2023-12-21 11:12:10,876 INFO L226 Difference]: Without dead ends: 8691 [2023-12-21 11:12:10,880 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 [2023-12-21 11:12:10,881 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 812 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:10,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2748 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:10,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2023-12-21 11:12:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 6381. [2023-12-21 11:12:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6381 states, 6375 states have (on average 1.5534117647058823) internal successors, (9903), 6379 states have internal predecessors, (9903), 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) [2023-12-21 11:12:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 9908 transitions. [2023-12-21 11:12:11,027 INFO L78 Accepts]: Start accepts. Automaton has 6381 states and 9908 transitions. Word has length 63 [2023-12-21 11:12:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:11,028 INFO L495 AbstractCegarLoop]: Abstraction has 6381 states and 9908 transitions. [2023-12-21 11:12:11,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2023-12-21 11:12:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6381 states and 9908 transitions. [2023-12-21 11:12:11,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:12:11,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:11,029 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] [2023-12-21 11:12:11,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:12:11,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:11,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1900245951, now seen corresponding path program 1 times [2023-12-21 11:12:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493196678] [2023-12-21 11:12:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:11,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:11,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493196678] [2023-12-21 11:12:11,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493196678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:11,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:11,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:12:11,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224034993] [2023-12-21 11:12:11,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:11,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:11,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:11,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:11,052 INFO L87 Difference]: Start difference. First operand 6381 states and 9908 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) [2023-12-21 11:12:11,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:11,224 INFO L93 Difference]: Finished difference Result 13553 states and 21006 transitions. [2023-12-21 11:12:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:11,225 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 [2023-12-21 11:12:11,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:11,235 INFO L225 Difference]: With dead ends: 13553 [2023-12-21 11:12:11,235 INFO L226 Difference]: Without dead ends: 7192 [2023-12-21 11:12:11,242 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 [2023-12-21 11:12:11,243 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 134 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 748 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 [2023-12-21 11:12:11,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 748 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7192 states. [2023-12-21 11:12:11,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7192 to 7106. [2023-12-21 11:12:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7106 states, 7100 states have (on average 1.548169014084507) internal successors, (10992), 7104 states have internal predecessors, (10992), 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) [2023-12-21 11:12:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7106 states to 7106 states and 10997 transitions. [2023-12-21 11:12:11,471 INFO L78 Accepts]: Start accepts. Automaton has 7106 states and 10997 transitions. Word has length 74 [2023-12-21 11:12:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:11,471 INFO L495 AbstractCegarLoop]: Abstraction has 7106 states and 10997 transitions. [2023-12-21 11:12:11,472 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) [2023-12-21 11:12:11,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7106 states and 10997 transitions. [2023-12-21 11:12:11,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 11:12:11,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:11,473 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] [2023-12-21 11:12:11,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:12:11,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:11,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1597636600, now seen corresponding path program 1 times [2023-12-21 11:12:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742677329] [2023-12-21 11:12:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:11,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:11,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742677329] [2023-12-21 11:12:11,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742677329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:11,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:11,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:12:11,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989311770] [2023-12-21 11:12:11,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:11,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:12:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:11,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:12:11,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:12:11,514 INFO L87 Difference]: Start difference. First operand 7106 states and 10997 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) [2023-12-21 11:12:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:11,923 INFO L93 Difference]: Finished difference Result 18455 states and 28290 transitions. [2023-12-21 11:12:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:12:11,923 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 [2023-12-21 11:12:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:11,941 INFO L225 Difference]: With dead ends: 18455 [2023-12-21 11:12:11,941 INFO L226 Difference]: Without dead ends: 11236 [2023-12-21 11:12:11,950 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 [2023-12-21 11:12:11,950 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 612 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1143 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 [2023-12-21 11:12:11,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1143 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:12:11,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11236 states. [2023-12-21 11:12:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11236 to 9823. [2023-12-21 11:12:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9823 states, 9817 states have (on average 1.5085056534582866) internal successors, (14809), 9821 states have internal predecessors, (14809), 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) [2023-12-21 11:12:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9823 states to 9823 states and 14814 transitions. [2023-12-21 11:12:12,192 INFO L78 Accepts]: Start accepts. Automaton has 9823 states and 14814 transitions. Word has length 85 [2023-12-21 11:12:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:12,192 INFO L495 AbstractCegarLoop]: Abstraction has 9823 states and 14814 transitions. [2023-12-21 11:12:12,193 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) [2023-12-21 11:12:12,193 INFO L276 IsEmpty]: Start isEmpty. Operand 9823 states and 14814 transitions. [2023-12-21 11:12:12,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-21 11:12:12,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:12,194 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] [2023-12-21 11:12:12,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:12:12,195 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:12,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -466646901, now seen corresponding path program 1 times [2023-12-21 11:12:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:12,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818600635] [2023-12-21 11:12:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:12,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:12,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818600635] [2023-12-21 11:12:12,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818600635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:12,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:12,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:12:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668171295] [2023-12-21 11:12:12,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:12,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:12,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:12,225 INFO L87 Difference]: Start difference. First operand 9823 states and 14814 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) [2023-12-21 11:12:12,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:12,359 INFO L93 Difference]: Finished difference Result 13964 states and 21098 transitions. [2023-12-21 11:12:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:12,360 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 [2023-12-21 11:12:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:12,366 INFO L225 Difference]: With dead ends: 13964 [2023-12-21 11:12:12,366 INFO L226 Difference]: Without dead ends: 4151 [2023-12-21 11:12:12,374 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 [2023-12-21 11:12:12,375 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 327 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 469 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 [2023-12-21 11:12:12,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 469 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2023-12-21 11:12:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 4093. [2023-12-21 11:12:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4093 states, 4087 states have (on average 1.4059212136041106) internal successors, (5746), 4091 states have internal predecessors, (5746), 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) [2023-12-21 11:12:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4093 states to 4093 states and 5751 transitions. [2023-12-21 11:12:12,460 INFO L78 Accepts]: Start accepts. Automaton has 4093 states and 5751 transitions. Word has length 91 [2023-12-21 11:12:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:12,461 INFO L495 AbstractCegarLoop]: Abstraction has 4093 states and 5751 transitions. [2023-12-21 11:12:12,461 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) [2023-12-21 11:12:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4093 states and 5751 transitions. [2023-12-21 11:12:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:12:12,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:12,462 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] [2023-12-21 11:12:12,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:12:12,462 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:12,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1575348907, now seen corresponding path program 1 times [2023-12-21 11:12:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:12,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139748372] [2023-12-21 11:12:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:12,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:12,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:12,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:12,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139748372] [2023-12-21 11:12:12,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139748372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:12,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:12,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:12:12,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276382918] [2023-12-21 11:12:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:12,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:12:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:12:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:12:12,500 INFO L87 Difference]: Start difference. First operand 4093 states and 5751 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) [2023-12-21 11:12:12,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:12,698 INFO L93 Difference]: Finished difference Result 9644 states and 13524 transitions. [2023-12-21 11:12:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:12:12,698 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 [2023-12-21 11:12:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:12,705 INFO L225 Difference]: With dead ends: 9644 [2023-12-21 11:12:12,706 INFO L226 Difference]: Without dead ends: 5715 [2023-12-21 11:12:12,711 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 [2023-12-21 11:12:12,712 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 529 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 2157 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 [2023-12-21 11:12:12,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 2157 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5715 states. [2023-12-21 11:12:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5715 to 4095. [2023-12-21 11:12:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4095 states, 4089 states have (on average 1.4027879677182686) internal successors, (5736), 4093 states have internal predecessors, (5736), 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) [2023-12-21 11:12:12,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4095 states to 4095 states and 5741 transitions. [2023-12-21 11:12:12,808 INFO L78 Accepts]: Start accepts. Automaton has 4095 states and 5741 transitions. Word has length 95 [2023-12-21 11:12:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:12,809 INFO L495 AbstractCegarLoop]: Abstraction has 4095 states and 5741 transitions. [2023-12-21 11:12:12,809 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) [2023-12-21 11:12:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4095 states and 5741 transitions. [2023-12-21 11:12:12,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:12:12,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:12,810 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] [2023-12-21 11:12:12,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:12:12,810 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:12,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:12,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1797676602, now seen corresponding path program 1 times [2023-12-21 11:12:12,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:12,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277591823] [2023-12-21 11:12:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:12,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:12,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277591823] [2023-12-21 11:12:12,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277591823] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:12,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086201969] [2023-12-21 11:12:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:12,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:12,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:12,880 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) [2023-12-21 11:12:12,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:12:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:13,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:12:13,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:12:13,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:12:13,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086201969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:13,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:12:13,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-21 11:12:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622405574] [2023-12-21 11:12:13,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:13,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:13,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:13,142 INFO L87 Difference]: Start difference. First operand 4095 states and 5741 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) [2023-12-21 11:12:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:13,271 INFO L93 Difference]: Finished difference Result 5246 states and 7346 transitions. [2023-12-21 11:12:13,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:13,271 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 [2023-12-21 11:12:13,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:13,278 INFO L225 Difference]: With dead ends: 5246 [2023-12-21 11:12:13,278 INFO L226 Difference]: Without dead ends: 5242 [2023-12-21 11:12:13,280 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 [2023-12-21 11:12:13,280 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 223 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 735 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 [2023-12-21 11:12:13,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 735 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5242 states. [2023-12-21 11:12:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5242 to 5104. [2023-12-21 11:12:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5098 states have (on average 1.4074146724205572) internal successors, (7175), 5102 states have internal predecessors, (7175), 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) [2023-12-21 11:12:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 7180 transitions. [2023-12-21 11:12:13,424 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 7180 transitions. Word has length 97 [2023-12-21 11:12:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:13,425 INFO L495 AbstractCegarLoop]: Abstraction has 5104 states and 7180 transitions. [2023-12-21 11:12:13,425 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) [2023-12-21 11:12:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 7180 transitions. [2023-12-21 11:12:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 11:12:13,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:13,426 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, 1, 1] [2023-12-21 11:12:13,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 11:12:13,633 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 [2023-12-21 11:12:13,634 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:13,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 673719498, now seen corresponding path program 1 times [2023-12-21 11:12:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:13,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116607599] [2023-12-21 11:12:13,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:13,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:12:13,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116607599] [2023-12-21 11:12:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116607599] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812385519] [2023-12-21 11:12:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:13,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:13,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:13,715 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) [2023-12-21 11:12:13,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:12:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:13,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:12:13,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:12:13,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:12:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812385519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:13,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:12:13,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-21 11:12:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926450187] [2023-12-21 11:12:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:13,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:13,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:13,894 INFO L87 Difference]: Start difference. First operand 5104 states and 7180 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-12-21 11:12:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:13,992 INFO L93 Difference]: Finished difference Result 9076 states and 12838 transitions. [2023-12-21 11:12:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:13,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 150 [2023-12-21 11:12:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:13,997 INFO L225 Difference]: With dead ends: 9076 [2023-12-21 11:12:13,997 INFO L226 Difference]: Without dead ends: 3983 [2023-12-21 11:12:14,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:14,002 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 253 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 388 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 [2023-12-21 11:12:14,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 388 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2023-12-21 11:12:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3648. [2023-12-21 11:12:14,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3642 states have (on average 1.3871499176276771) internal successors, (5052), 3646 states have internal predecessors, (5052), 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) [2023-12-21 11:12:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 5057 transitions. [2023-12-21 11:12:14,073 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 5057 transitions. Word has length 150 [2023-12-21 11:12:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:14,074 INFO L495 AbstractCegarLoop]: Abstraction has 3648 states and 5057 transitions. [2023-12-21 11:12:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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) [2023-12-21 11:12:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 5057 transitions. [2023-12-21 11:12:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 11:12:14,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:14,075 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, 1, 1] [2023-12-21 11:12:14,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:14,280 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 [2023-12-21 11:12:14,280 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:14,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1981582076, now seen corresponding path program 1 times [2023-12-21 11:12:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:14,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276573331] [2023-12-21 11:12:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:12:14,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276573331] [2023-12-21 11:12:14,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276573331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966486252] [2023-12-21 11:12:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:14,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:14,372 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) [2023-12-21 11:12:14,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:12:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:14,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:12:14,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:12:14,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:12:14,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966486252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:14,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:12:14,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-21 11:12:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81409333] [2023-12-21 11:12:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:14,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:14,548 INFO L87 Difference]: Start difference. First operand 3648 states and 5057 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-21 11:12:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:14,652 INFO L93 Difference]: Finished difference Result 7133 states and 9936 transitions. [2023-12-21 11:12:14,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:14,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 153 [2023-12-21 11:12:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:14,656 INFO L225 Difference]: With dead ends: 7133 [2023-12-21 11:12:14,656 INFO L226 Difference]: Without dead ends: 3648 [2023-12-21 11:12:14,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:14,659 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 263 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 360 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 [2023-12-21 11:12:14,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 360 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3648 states. [2023-12-21 11:12:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3648 to 3648. [2023-12-21 11:12:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3648 states, 3642 states have (on average 1.3487095002745744) internal successors, (4912), 3646 states have internal predecessors, (4912), 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) [2023-12-21 11:12:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3648 states to 3648 states and 4917 transitions. [2023-12-21 11:12:14,784 INFO L78 Accepts]: Start accepts. Automaton has 3648 states and 4917 transitions. Word has length 153 [2023-12-21 11:12:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:14,784 INFO L495 AbstractCegarLoop]: Abstraction has 3648 states and 4917 transitions. [2023-12-21 11:12:14,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-21 11:12:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3648 states and 4917 transitions. [2023-12-21 11:12:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 11:12:14,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:14,786 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, 1, 1] [2023-12-21 11:12:14,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:14,991 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 [2023-12-21 11:12:14,992 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:14,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1019155795, now seen corresponding path program 1 times [2023-12-21 11:12:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130282473] [2023-12-21 11:12:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:12:15,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:15,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130282473] [2023-12-21 11:12:15,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130282473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:15,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116878534] [2023-12-21 11:12:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:15,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:15,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:15,118 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) [2023-12-21 11:12:15,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:12:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:15,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 11:12:15,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:12:15,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:12:15,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116878534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:15,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:12:15,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-21 11:12:15,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978332912] [2023-12-21 11:12:15,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:15,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:15,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:15,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:15,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:15,262 INFO L87 Difference]: Start difference. First operand 3648 states and 4917 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-21 11:12:15,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:15,545 INFO L93 Difference]: Finished difference Result 8438 states and 11553 transitions. [2023-12-21 11:12:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 [2023-12-21 11:12:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:15,552 INFO L225 Difference]: With dead ends: 8438 [2023-12-21 11:12:15,552 INFO L226 Difference]: Without dead ends: 4953 [2023-12-21 11:12:15,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:12:15,555 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 197 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 600 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 [2023-12-21 11:12:15,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 600 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:12:15,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4953 states. [2023-12-21 11:12:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4953 to 4621. [2023-12-21 11:12:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 4615 states have (on average 1.313759479956663) internal successors, (6063), 4619 states have internal predecessors, (6063), 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) [2023-12-21 11:12:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 6068 transitions. [2023-12-21 11:12:15,666 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 6068 transitions. Word has length 154 [2023-12-21 11:12:15,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:15,666 INFO L495 AbstractCegarLoop]: Abstraction has 4621 states and 6068 transitions. [2023-12-21 11:12:15,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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) [2023-12-21 11:12:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 6068 transitions. [2023-12-21 11:12:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 11:12:15,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:15,668 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, 1, 1] [2023-12-21 11:12:15,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:15,888 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 [2023-12-21 11:12:15,889 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:15,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash 512092272, now seen corresponding path program 1 times [2023-12-21 11:12:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410679607] [2023-12-21 11:12:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:12:16,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410679607] [2023-12-21 11:12:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410679607] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251188384] [2023-12-21 11:12:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:16,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:16,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:16,064 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) [2023-12-21 11:12:16,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:12:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:16,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:12:16,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:12:16,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:12:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251188384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:16,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-12-21 11:12:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106375131] [2023-12-21 11:12:16,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:16,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 11:12:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:16,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 11:12:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:12:16,402 INFO L87 Difference]: Start difference. First operand 4621 states and 6068 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2023-12-21 11:12:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:16,767 INFO L93 Difference]: Finished difference Result 12960 states and 17029 transitions. [2023-12-21 11:12:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:12:16,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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 156 [2023-12-21 11:12:16,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:16,776 INFO L225 Difference]: With dead ends: 12960 [2023-12-21 11:12:16,776 INFO L226 Difference]: Without dead ends: 8502 [2023-12-21 11:12:16,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:12:16,779 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 900 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:16,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 3675 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8502 states. [2023-12-21 11:12:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8502 to 7193. [2023-12-21 11:12:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7193 states, 7187 states have (on average 1.327953248921664) internal successors, (9544), 7191 states have internal predecessors, (9544), 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) [2023-12-21 11:12:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7193 states to 7193 states and 9549 transitions. [2023-12-21 11:12:16,937 INFO L78 Accepts]: Start accepts. Automaton has 7193 states and 9549 transitions. Word has length 156 [2023-12-21 11:12:16,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:16,937 INFO L495 AbstractCegarLoop]: Abstraction has 7193 states and 9549 transitions. [2023-12-21 11:12:16,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2023-12-21 11:12:16,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7193 states and 9549 transitions. [2023-12-21 11:12:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-21 11:12:16,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:16,939 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, 1, 1] [2023-12-21 11:12:16,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:17,144 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 [2023-12-21 11:12:17,144 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:17,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:17,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1812968908, now seen corresponding path program 1 times [2023-12-21 11:12:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:17,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154479077] [2023-12-21 11:12:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:17,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:12:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154479077] [2023-12-21 11:12:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154479077] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102386367] [2023-12-21 11:12:17,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:17,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:17,425 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) [2023-12-21 11:12:17,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:12:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:17,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:12:17,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:12:17,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:12:17,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102386367] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:17,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:18,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2023-12-21 11:12:18,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126577660] [2023-12-21 11:12:18,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:18,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 11:12:18,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:18,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 11:12:18,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:12:18,002 INFO L87 Difference]: Start difference. First operand 7193 states and 9549 transitions. Second operand has 11 states, 11 states have (on average 22.272727272727273) internal successors, (245), 11 states have internal predecessors, (245), 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) [2023-12-21 11:12:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:18,617 INFO L93 Difference]: Finished difference Result 18589 states and 24486 transitions. [2023-12-21 11:12:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 11:12:18,617 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.272727272727273) internal successors, (245), 11 states have internal predecessors, (245), 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 [2023-12-21 11:12:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:18,630 INFO L225 Difference]: With dead ends: 18589 [2023-12-21 11:12:18,630 INFO L226 Difference]: Without dead ends: 11559 [2023-12-21 11:12:18,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:12:18,636 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 1507 mSDsluCounter, 7093 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 8070 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:18,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 8070 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:12:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11559 states. [2023-12-21 11:12:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11559 to 9424. [2023-12-21 11:12:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9424 states, 9418 states have (on average 1.3324485028668507) internal successors, (12549), 9422 states have internal predecessors, (12549), 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) [2023-12-21 11:12:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9424 states to 9424 states and 12554 transitions. [2023-12-21 11:12:18,854 INFO L78 Accepts]: Start accepts. Automaton has 9424 states and 12554 transitions. Word has length 251 [2023-12-21 11:12:18,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:18,854 INFO L495 AbstractCegarLoop]: Abstraction has 9424 states and 12554 transitions. [2023-12-21 11:12:18,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.272727272727273) internal successors, (245), 11 states have internal predecessors, (245), 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) [2023-12-21 11:12:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 9424 states and 12554 transitions. [2023-12-21 11:12:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-21 11:12:18,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:18,856 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:18,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 11:12:19,061 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 [2023-12-21 11:12:19,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:19,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash -492424867, now seen corresponding path program 1 times [2023-12-21 11:12:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:19,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992106271] [2023-12-21 11:12:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:19,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 122 proven. 329 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 11:12:19,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992106271] [2023-12-21 11:12:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992106271] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399295722] [2023-12-21 11:12:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:19,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:19,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:19,481 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) [2023-12-21 11:12:19,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 11:12:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:19,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 11:12:19,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 11:12:19,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 15 proven. 436 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 11:12:20,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399295722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:20,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2023-12-21 11:12:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963604542] [2023-12-21 11:12:20,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 11:12:20,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 11:12:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:12:20,226 INFO L87 Difference]: Start difference. First operand 9424 states and 12554 transitions. Second operand has 18 states, 18 states have (on average 29.38888888888889) internal successors, (529), 18 states have internal predecessors, (529), 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) [2023-12-21 11:12:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:21,305 INFO L93 Difference]: Finished difference Result 23887 states and 31505 transitions. [2023-12-21 11:12:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 11:12:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 29.38888888888889) internal successors, (529), 18 states have internal predecessors, (529), 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 347 [2023-12-21 11:12:21,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:21,323 INFO L225 Difference]: With dead ends: 23887 [2023-12-21 11:12:21,323 INFO L226 Difference]: Without dead ends: 14626 [2023-12-21 11:12:21,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=1789, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 11:12:21,330 INFO L413 NwaCegarLoop]: 1473 mSDtfsCounter, 4610 mSDsluCounter, 15205 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4610 SdHoareTripleChecker+Valid, 16678 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:21,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4610 Valid, 16678 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:12:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14626 states. [2023-12-21 11:12:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14626 to 11507. [2023-12-21 11:12:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11507 states, 11501 states have (on average 1.3371011216415964) internal successors, (15378), 11505 states have internal predecessors, (15378), 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) [2023-12-21 11:12:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11507 states to 11507 states and 15383 transitions. [2023-12-21 11:12:21,620 INFO L78 Accepts]: Start accepts. Automaton has 11507 states and 15383 transitions. Word has length 347 [2023-12-21 11:12:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:21,620 INFO L495 AbstractCegarLoop]: Abstraction has 11507 states and 15383 transitions. [2023-12-21 11:12:21,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 29.38888888888889) internal successors, (529), 18 states have internal predecessors, (529), 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) [2023-12-21 11:12:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11507 states and 15383 transitions. [2023-12-21 11:12:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-12-21 11:12:21,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:21,623 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:21,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:21,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:21,829 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:21,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1405805113, now seen corresponding path program 1 times [2023-12-21 11:12:21,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:21,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530051027] [2023-12-21 11:12:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-21 11:12:21,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:21,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530051027] [2023-12-21 11:12:21,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530051027] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:21,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:21,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:12:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552460846] [2023-12-21 11:12:21,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:21,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:12:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:12:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:12:21,925 INFO L87 Difference]: Start difference. First operand 11507 states and 15383 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-12-21 11:12:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:22,067 INFO L93 Difference]: Finished difference Result 13067 states and 17179 transitions. [2023-12-21 11:12:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:12:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 445 [2023-12-21 11:12:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:22,071 INFO L225 Difference]: With dead ends: 13067 [2023-12-21 11:12:22,071 INFO L226 Difference]: Without dead ends: 1619 [2023-12-21 11:12:22,078 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 [2023-12-21 11:12:22,078 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 132 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 360 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 [2023-12-21 11:12:22,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 360 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:22,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2023-12-21 11:12:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1057. [2023-12-21 11:12:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1053 states have (on average 1.0778727445394112) internal successors, (1135), 1055 states have internal predecessors, (1135), 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) [2023-12-21 11:12:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1138 transitions. [2023-12-21 11:12:22,109 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1138 transitions. Word has length 445 [2023-12-21 11:12:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:22,110 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1138 transitions. [2023-12-21 11:12:22,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-12-21 11:12:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1138 transitions. [2023-12-21 11:12:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-21 11:12:22,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:22,113 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 11:12:22,114 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:22,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash -782781155, now seen corresponding path program 1 times [2023-12-21 11:12:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:22,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415853355] [2023-12-21 11:12:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:22,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-21 11:12:22,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415853355] [2023-12-21 11:12:22,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415853355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:22,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:22,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:12:22,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633976353] [2023-12-21 11:12:22,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:22,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:12:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:22,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:12:22,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:12:22,304 INFO L87 Difference]: Start difference. First operand 1057 states and 1138 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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) [2023-12-21 11:12:22,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:22,433 INFO L93 Difference]: Finished difference Result 1446 states and 1579 transitions. [2023-12-21 11:12:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:12:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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 446 [2023-12-21 11:12:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:22,434 INFO L225 Difference]: With dead ends: 1446 [2023-12-21 11:12:22,434 INFO L226 Difference]: Without dead ends: 1250 [2023-12-21 11:12:22,435 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 [2023-12-21 11:12:22,436 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 223 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:22,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1406 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-12-21 11:12:22,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1120. [2023-12-21 11:12:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1116 states have (on average 1.0797491039426523) internal successors, (1205), 1118 states have internal predecessors, (1205), 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) [2023-12-21 11:12:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1208 transitions. [2023-12-21 11:12:22,464 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1208 transitions. Word has length 446 [2023-12-21 11:12:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:22,465 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1208 transitions. [2023-12-21 11:12:22,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 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) [2023-12-21 11:12:22,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1208 transitions. [2023-12-21 11:12:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-12-21 11:12:22,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:22,470 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:22,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:12:22,470 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:22,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1528078224, now seen corresponding path program 1 times [2023-12-21 11:12:22,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:22,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197678160] [2023-12-21 11:12:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:22,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2023-12-21 11:12:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:22,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197678160] [2023-12-21 11:12:22,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197678160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:12:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:12:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764060395] [2023-12-21 11:12:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:12:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:12:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:12:22,628 INFO L87 Difference]: Start difference. First operand 1120 states and 1208 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2023-12-21 11:12:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:22,696 INFO L93 Difference]: Finished difference Result 1309 states and 1416 transitions. [2023-12-21 11:12:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:12:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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 447 [2023-12-21 11:12:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:22,698 INFO L225 Difference]: With dead ends: 1309 [2023-12-21 11:12:22,699 INFO L226 Difference]: Without dead ends: 1113 [2023-12-21 11:12:22,699 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 [2023-12-21 11:12:22,699 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 178 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 792 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 [2023-12-21 11:12:22,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 792 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:12:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2023-12-21 11:12:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1107. [2023-12-21 11:12:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1104 states have (on average 1.0679347826086956) internal successors, (1179), 1105 states have internal predecessors, (1179), 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) [2023-12-21 11:12:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1181 transitions. [2023-12-21 11:12:22,730 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1181 transitions. Word has length 447 [2023-12-21 11:12:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:22,730 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1181 transitions. [2023-12-21 11:12:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2023-12-21 11:12:22,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1181 transitions. [2023-12-21 11:12:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-12-21 11:12:22,733 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:22,733 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:22,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 11:12:22,733 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:22,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 724651279, now seen corresponding path program 1 times [2023-12-21 11:12:22,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:22,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562360967] [2023-12-21 11:12:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:22,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 91 proven. 303 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-21 11:12:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562360967] [2023-12-21 11:12:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562360967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373210583] [2023-12-21 11:12:23,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:23,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:23,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:23,960 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) [2023-12-21 11:12:24,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 11:12:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:24,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1423 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 11:12:24,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:24,733 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 93 proven. 253 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-21 11:12:24,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 25 proven. 321 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2023-12-21 11:12:25,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373210583] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:25,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:25,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 28 [2023-12-21 11:12:25,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215162143] [2023-12-21 11:12:25,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:25,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 11:12:25,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:25,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 11:12:25,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2023-12-21 11:12:25,194 INFO L87 Difference]: Start difference. First operand 1107 states and 1181 transitions. Second operand has 28 states, 28 states have (on average 14.071428571428571) internal successors, (394), 28 states have internal predecessors, (394), 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) [2023-12-21 11:12:25,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:25,616 INFO L93 Difference]: Finished difference Result 1234 states and 1312 transitions. [2023-12-21 11:12:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:12:25,617 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 14.071428571428571) internal successors, (394), 28 states have internal predecessors, (394), 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 501 [2023-12-21 11:12:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:25,618 INFO L225 Difference]: With dead ends: 1234 [2023-12-21 11:12:25,618 INFO L226 Difference]: Without dead ends: 1231 [2023-12-21 11:12:25,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=1684, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 11:12:25,619 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 721 mSDsluCounter, 6172 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 6534 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:25,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 6534 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:12:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2023-12-21 11:12:25,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1201. [2023-12-21 11:12:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1198 states have (on average 1.0659432387312187) internal successors, (1277), 1199 states have internal predecessors, (1277), 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) [2023-12-21 11:12:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1279 transitions. [2023-12-21 11:12:25,658 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1279 transitions. Word has length 501 [2023-12-21 11:12:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:25,658 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1279 transitions. [2023-12-21 11:12:25,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.071428571428571) internal successors, (394), 28 states have internal predecessors, (394), 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) [2023-12-21 11:12:25,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1279 transitions. [2023-12-21 11:12:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-21 11:12:25,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:25,661 INFO L195 NwaCegarLoop]: trace histogram [11, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:25,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 11:12:25,880 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 [2023-12-21 11:12:25,881 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:25,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:25,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1933207870, now seen corresponding path program 1 times [2023-12-21 11:12:25,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:25,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91220022] [2023-12-21 11:12:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 271 proven. 45 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-21 11:12:26,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:26,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91220022] [2023-12-21 11:12:26,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91220022] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:26,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636137007] [2023-12-21 11:12:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:26,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:26,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:26,223 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) [2023-12-21 11:12:26,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 11:12:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:26,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:12:26,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 271 proven. 45 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-21 11:12:26,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 271 proven. 45 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2023-12-21 11:12:26,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636137007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:26,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:26,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2023-12-21 11:12:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466911940] [2023-12-21 11:12:26,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:26,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 11:12:26,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:26,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 11:12:26,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 11:12:26,658 INFO L87 Difference]: Start difference. First operand 1201 states and 1279 transitions. Second operand has 9 states, 9 states have (on average 29.444444444444443) internal successors, (265), 9 states have internal predecessors, (265), 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) [2023-12-21 11:12:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:26,835 INFO L93 Difference]: Finished difference Result 1581 states and 1689 transitions. [2023-12-21 11:12:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:12:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 29.444444444444443) internal successors, (265), 9 states have internal predecessors, (265), 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 547 [2023-12-21 11:12:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:26,837 INFO L225 Difference]: With dead ends: 1581 [2023-12-21 11:12:26,837 INFO L226 Difference]: Without dead ends: 1398 [2023-12-21 11:12:26,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1112 GetRequests, 1098 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:12:26,838 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 391 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:26,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2345 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-12-21 11:12:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1282. [2023-12-21 11:12:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1279 states have (on average 1.0656763096168882) internal successors, (1363), 1280 states have internal predecessors, (1363), 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) [2023-12-21 11:12:26,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1365 transitions. [2023-12-21 11:12:26,874 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1365 transitions. Word has length 547 [2023-12-21 11:12:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:26,874 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1365 transitions. [2023-12-21 11:12:26,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 29.444444444444443) internal successors, (265), 9 states have internal predecessors, (265), 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) [2023-12-21 11:12:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1365 transitions. [2023-12-21 11:12:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2023-12-21 11:12:26,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:26,877 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 11:12:26,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:27,083 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 [2023-12-21 11:12:27,084 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:27,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash -434578402, now seen corresponding path program 1 times [2023-12-21 11:12:27,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351993597] [2023-12-21 11:12:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 174 proven. 758 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-12-21 11:12:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351993597] [2023-12-21 11:12:28,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351993597] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028348068] [2023-12-21 11:12:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:28,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:28,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:28,194 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:12:28,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 11:12:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:28,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 11:12:28,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 235 proven. 663 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-21 11:12:29,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 30 proven. 868 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-12-21 11:12:29,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028348068] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:29,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:29,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 32 [2023-12-21 11:12:29,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809954559] [2023-12-21 11:12:29,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:29,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:12:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:12:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:12:29,776 INFO L87 Difference]: Start difference. First operand 1282 states and 1365 transitions. Second operand has 32 states, 32 states have (on average 20.875) internal successors, (668), 32 states have internal predecessors, (668), 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) [2023-12-21 11:12:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:30,496 INFO L93 Difference]: Finished difference Result 1408 states and 1495 transitions. [2023-12-21 11:12:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 11:12:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 20.875) internal successors, (668), 32 states have internal predecessors, (668), 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 603 [2023-12-21 11:12:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:30,498 INFO L225 Difference]: With dead ends: 1408 [2023-12-21 11:12:30,498 INFO L226 Difference]: Without dead ends: 1405 [2023-12-21 11:12:30,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1252 GetRequests, 1199 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=2693, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 11:12:30,500 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 934 mSDsluCounter, 10965 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 11520 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:30,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 11520 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:12:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2023-12-21 11:12:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1376. [2023-12-21 11:12:30,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1373 states have (on average 1.0640932265112892) internal successors, (1461), 1374 states have internal predecessors, (1461), 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) [2023-12-21 11:12:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1463 transitions. [2023-12-21 11:12:30,539 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1463 transitions. Word has length 603 [2023-12-21 11:12:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:30,539 INFO L495 AbstractCegarLoop]: Abstraction has 1376 states and 1463 transitions. [2023-12-21 11:12:30,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 20.875) internal successors, (668), 32 states have internal predecessors, (668), 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) [2023-12-21 11:12:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1463 transitions. [2023-12-21 11:12:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2023-12-21 11:12:30,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:30,543 INFO L195 NwaCegarLoop]: trace histogram [13, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-21 11:12:30,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:30,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 11:12:30,749 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:30,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1332213261, now seen corresponding path program 1 times [2023-12-21 11:12:30,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:30,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529923340] [2023-12-21 11:12:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:30,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 457 proven. 200 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2023-12-21 11:12:31,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529923340] [2023-12-21 11:12:31,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529923340] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:31,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628650103] [2023-12-21 11:12:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:31,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:31,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:31,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:12:31,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 11:12:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:31,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:12:31,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 457 proven. 200 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2023-12-21 11:12:31,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 457 proven. 200 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2023-12-21 11:12:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628650103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:31,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:31,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2023-12-21 11:12:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220427213] [2023-12-21 11:12:31,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:31,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 11:12:31,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 11:12:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:12:31,856 INFO L87 Difference]: Start difference. First operand 1376 states and 1463 transitions. Second operand has 11 states, 11 states have (on average 33.18181818181818) internal successors, (365), 11 states have internal predecessors, (365), 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) [2023-12-21 11:12:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:32,104 INFO L93 Difference]: Finished difference Result 1762 states and 1881 transitions. [2023-12-21 11:12:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:12:32,104 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 33.18181818181818) internal successors, (365), 11 states have internal predecessors, (365), 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 649 [2023-12-21 11:12:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:32,106 INFO L225 Difference]: With dead ends: 1762 [2023-12-21 11:12:32,106 INFO L226 Difference]: Without dead ends: 1579 [2023-12-21 11:12:32,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1323 GetRequests, 1305 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:12:32,107 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 574 mSDsluCounter, 3770 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 4279 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:32,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 4279 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2023-12-21 11:12:32,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1459. [2023-12-21 11:12:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1456 states have (on average 1.0638736263736264) internal successors, (1549), 1457 states have internal predecessors, (1549), 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) [2023-12-21 11:12:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 1551 transitions. [2023-12-21 11:12:32,151 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 1551 transitions. Word has length 649 [2023-12-21 11:12:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:32,151 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 1551 transitions. [2023-12-21 11:12:32,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.18181818181818) internal successors, (365), 11 states have internal predecessors, (365), 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) [2023-12-21 11:12:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 1551 transitions. [2023-12-21 11:12:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2023-12-21 11:12:32,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:32,155 INFO L195 NwaCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:12:32,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:32,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 11:12:32,361 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:32,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:32,362 INFO L85 PathProgramCache]: Analyzing trace with hash -84862364, now seen corresponding path program 1 times [2023-12-21 11:12:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:32,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346480876] [2023-12-21 11:12:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 133 proven. 1346 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:12:33,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346480876] [2023-12-21 11:12:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346480876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562998598] [2023-12-21 11:12:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:33,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:33,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:33,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:12:33,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 11:12:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:33,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 1954 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-21 11:12:33,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 288 proven. 1174 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 11:12:35,127 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 35 proven. 1427 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-21 11:12:35,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562998598] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:35,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 38 [2023-12-21 11:12:35,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312511599] [2023-12-21 11:12:35,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 11:12:35,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 11:12:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 11:12:35,753 INFO L87 Difference]: Start difference. First operand 1459 states and 1551 transitions. Second operand has 38 states, 38 states have (on average 25.36842105263158) internal successors, (964), 38 states have internal predecessors, (964), 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) [2023-12-21 11:12:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:36,860 INFO L93 Difference]: Finished difference Result 1595 states and 1691 transitions. [2023-12-21 11:12:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-21 11:12:36,861 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 25.36842105263158) internal successors, (964), 38 states have internal predecessors, (964), 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 706 [2023-12-21 11:12:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:36,864 INFO L225 Difference]: With dead ends: 1595 [2023-12-21 11:12:36,864 INFO L226 Difference]: Without dead ends: 1592 [2023-12-21 11:12:36,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1405 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=349, Invalid=4073, Unknown=0, NotChecked=0, Total=4422 [2023-12-21 11:12:36,866 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 1238 mSDsluCounter, 19372 mSDsCounter, 0 mSdLazyCounter, 2090 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 20151 SdHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:36,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 20151 Invalid, 2095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:12:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2023-12-21 11:12:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1553. [2023-12-21 11:12:36,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 1550 states have (on average 1.0625806451612902) internal successors, (1647), 1551 states have internal predecessors, (1647), 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) [2023-12-21 11:12:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 1649 transitions. [2023-12-21 11:12:36,922 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 1649 transitions. Word has length 706 [2023-12-21 11:12:36,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:36,923 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 1649 transitions. [2023-12-21 11:12:36,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 25.36842105263158) internal successors, (964), 38 states have internal predecessors, (964), 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) [2023-12-21 11:12:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 1649 transitions. [2023-12-21 11:12:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-12-21 11:12:36,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:36,927 INFO L195 NwaCegarLoop]: trace histogram [15, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:12:36,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-21 11:12:37,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:37,134 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:37,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:37,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1592404435, now seen corresponding path program 1 times [2023-12-21 11:12:37,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:37,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578528610] [2023-12-21 11:12:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:37,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 643 proven. 466 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2023-12-21 11:12:37,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:37,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578528610] [2023-12-21 11:12:37,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578528610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:37,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794002815] [2023-12-21 11:12:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:37,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:37,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:37,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:12:37,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 11:12:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:38,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 2080 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 11:12:38,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 643 proven. 466 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2023-12-21 11:12:38,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 643 proven. 466 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2023-12-21 11:12:38,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794002815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:38,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:38,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2023-12-21 11:12:38,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044822391] [2023-12-21 11:12:38,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:38,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:12:38,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:38,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:12:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:12:38,612 INFO L87 Difference]: Start difference. First operand 1553 states and 1649 transitions. Second operand has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2023-12-21 11:12:39,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:39,004 INFO L93 Difference]: Finished difference Result 1961 states and 2091 transitions. [2023-12-21 11:12:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 11:12:39,004 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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 752 [2023-12-21 11:12:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:39,008 INFO L225 Difference]: With dead ends: 1961 [2023-12-21 11:12:39,008 INFO L226 Difference]: Without dead ends: 1778 [2023-12-21 11:12:39,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1514 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-12-21 11:12:39,009 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 758 mSDsluCounter, 6372 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 7052 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:39,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 7052 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:12:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2023-12-21 11:12:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1638. [2023-12-21 11:12:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1635 states have (on average 1.0623853211009173) internal successors, (1737), 1636 states have internal predecessors, (1737), 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) [2023-12-21 11:12:39,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1739 transitions. [2023-12-21 11:12:39,078 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1739 transitions. Word has length 752 [2023-12-21 11:12:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:39,078 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 1739 transitions. [2023-12-21 11:12:39,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.84615384615385) internal successors, (466), 13 states have internal predecessors, (466), 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) [2023-12-21 11:12:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1739 transitions. [2023-12-21 11:12:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2023-12-21 11:12:39,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:39,083 INFO L195 NwaCegarLoop]: trace histogram [16, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:39,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 11:12:39,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-21 11:12:39,290 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:39,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:39,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1107816856, now seen corresponding path program 1 times [2023-12-21 11:12:39,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:39,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886720384] [2023-12-21 11:12:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 92 proven. 1941 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 11:12:40,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886720384] [2023-12-21 11:12:40,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886720384] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576275948] [2023-12-21 11:12:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:40,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:40,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:40,855 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:12:40,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 11:12:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:41,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 2221 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-21 11:12:41,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 249 proven. 1784 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 11:12:42,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:12:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 40 proven. 1993 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 11:12:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576275948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:12:42,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:12:42,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 44 [2023-12-21 11:12:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928478707] [2023-12-21 11:12:42,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:12:42,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-21 11:12:42,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-21 11:12:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1773, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 11:12:42,956 INFO L87 Difference]: Start difference. First operand 1638 states and 1739 transitions. Second operand has 44 states, 44 states have (on average 27.75) internal successors, (1221), 44 states have internal predecessors, (1221), 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) [2023-12-21 11:12:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:44,584 INFO L93 Difference]: Finished difference Result 2828 states and 2997 transitions. [2023-12-21 11:12:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 11:12:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 27.75) internal successors, (1221), 44 states have internal predecessors, (1221), 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 810 [2023-12-21 11:12:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:44,588 INFO L225 Difference]: With dead ends: 2828 [2023-12-21 11:12:44,588 INFO L226 Difference]: Without dead ends: 2825 [2023-12-21 11:12:44,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1697 GetRequests, 1613 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=471, Invalid=6839, Unknown=0, NotChecked=0, Total=7310 [2023-12-21 11:12:44,591 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1522 mSDsluCounter, 30417 mSDsCounter, 0 mSdLazyCounter, 3094 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 31425 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:44,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 31425 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3094 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:12:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2023-12-21 11:12:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2515. [2023-12-21 11:12:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2512 states have (on average 1.0589171974522293) internal successors, (2660), 2513 states have internal predecessors, (2660), 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) [2023-12-21 11:12:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 2662 transitions. [2023-12-21 11:12:44,674 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 2662 transitions. Word has length 810 [2023-12-21 11:12:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:44,674 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 2662 transitions. [2023-12-21 11:12:44,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 27.75) internal successors, (1221), 44 states have internal predecessors, (1221), 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) [2023-12-21 11:12:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 2662 transitions. [2023-12-21 11:12:44,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-12-21 11:12:44,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:12:44,680 INFO L195 NwaCegarLoop]: trace histogram [17, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-12-21 11:12:44,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-21 11:12:44,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:44,886 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:12:44,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:12:44,888 INFO L85 PathProgramCache]: Analyzing trace with hash 577799687, now seen corresponding path program 1 times [2023-12-21 11:12:44,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:12:44,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988469129] [2023-12-21 11:12:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:44,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:12:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 413 proven. 1538 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2023-12-21 11:12:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:12:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988469129] [2023-12-21 11:12:45,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988469129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:12:45,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399007602] [2023-12-21 11:12:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:12:45,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:12:45,940 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:12:45,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 11:12:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:12:46,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 11:12:46,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:12:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2335 backedges. 1673 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2023-12-21 11:12:46,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:12:46,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399007602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:12:46,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:12:46,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [23] total 26 [2023-12-21 11:12:46,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460969514] [2023-12-21 11:12:46,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:12:46,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 11:12:46,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:12:46,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 11:12:46,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2023-12-21 11:12:46,694 INFO L87 Difference]: Start difference. First operand 2515 states and 2662 transitions. Second operand has 11 states, 11 states have (on average 51.63636363636363) internal successors, (568), 11 states have internal predecessors, (568), 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) [2023-12-21 11:12:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:12:46,934 INFO L93 Difference]: Finished difference Result 2532 states and 2679 transitions. [2023-12-21 11:12:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 11:12:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 51.63636363636363) internal successors, (568), 11 states have internal predecessors, (568), 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 856 [2023-12-21 11:12:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:12:46,935 INFO L225 Difference]: With dead ends: 2532 [2023-12-21 11:12:46,935 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 11:12:46,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 866 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:12:46,937 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 719 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:12:46,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2910 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:12:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 11:12:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 11:12:46,937 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) [2023-12-21 11:12:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 11:12:46,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 856 [2023-12-21 11:12:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:12:46,937 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 11:12:46,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 51.63636363636363) internal successors, (568), 11 states have internal predecessors, (568), 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) [2023-12-21 11:12:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 11:12:46,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 11:12:46,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 11:12:46,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 11:12:47,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:12:47,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 11:13:12,180 WARN L293 SmtUtils]: Spent 21.92s on a formula simplification. DAG size of input: 349 DAG size of output: 455 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 11:14:20,295 WARN L293 SmtUtils]: Spent 1.14m on a formula simplification. DAG size of input: 298 DAG size of output: 283 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-21 11:14:38,098 WARN L293 SmtUtils]: Spent 13.88s on a formula simplification. DAG size of input: 281 DAG size of output: 367 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-21 11:26:30,265 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-24-13-10-8-10-8-5-8-5-8-6-8-6-5-6-4-6-4-6-5-6-5-7-5-7-5-7-5-7-5-7-3-7-3-6-3-4-3-4-3-4-2-3-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-67-13-10-8-10-8-7-8-7-8-7-8-7-5-7-5-7-4-7-5-6-5-7-5-7-5-7-5-7-5-7-3-7-3-6-3-4-3-4-3-4-2-3-2-1 context. [2023-12-21 11:26:30,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 11:26:30,268 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 11:26:30,269 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 11:26:30,273 INFO L158 Benchmark]: Toolchain (without parser) took 865096.51ms. Allocated memory was 379.6MB in the beginning and 1.3GB in the end (delta: 881.9MB). Free memory was 333.9MB in the beginning and 1.1GB in the end (delta: -741.8MB). Peak memory consumption was 140.4MB. Max. memory is 8.0GB. [2023-12-21 11:26:30,273 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 228.6MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 11:26:30,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.22ms. Allocated memory is still 379.6MB. Free memory was 333.9MB in the beginning and 312.3MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-21 11:26:30,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.63ms. Allocated memory is still 379.6MB. Free memory was 312.3MB in the beginning and 308.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 11:26:30,273 INFO L158 Benchmark]: Boogie Preprocessor took 61.65ms. Allocated memory is still 379.6MB. Free memory was 308.7MB in the beginning and 304.2MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 11:26:30,273 INFO L158 Benchmark]: RCFGBuilder took 757.82ms. Allocated memory is still 379.6MB. Free memory was 304.2MB in the beginning and 315.4MB in the end (delta: -11.2MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. [2023-12-21 11:26:30,274 INFO L158 Benchmark]: TraceAbstraction took 863953.43ms. Allocated memory was 379.6MB in the beginning and 1.3GB in the end (delta: 881.9MB). Free memory was 314.9MB in the beginning and 1.1GB in the end (delta: -760.8MB). Peak memory consumption was 121.1MB. Max. memory is 8.0GB. [2023-12-21 11:26:30,274 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 228.6MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 281.22ms. Allocated memory is still 379.6MB. Free memory was 333.9MB in the beginning and 312.3MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.63ms. Allocated memory is still 379.6MB. Free memory was 312.3MB in the beginning and 308.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.65ms. Allocated memory is still 379.6MB. Free memory was 308.7MB in the beginning and 304.2MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 757.82ms. Allocated memory is still 379.6MB. Free memory was 304.2MB in the beginning and 315.4MB in the end (delta: -11.2MB). Peak memory consumption was 31.9MB. Max. memory is 8.0GB. * TraceAbstraction took 863953.43ms. Allocated memory was 379.6MB in the beginning and 1.3GB in the end (delta: 881.9MB). Free memory was 314.9MB in the beginning and 1.1GB in the end (delta: -760.8MB). Peak memory consumption was 121.1MB. 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 ∨-7-11-4-4-3-7-3-6-3-6-3-6-2-6-2-6-2-4-1 term,while PolyPacSimplificationTermWalker was simplifying 6 xjuncts wrt. a ∧-22-11-4-6-3-7-3-6-3-6-3-6-2-6-2-6-2-4-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown