/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 23:22:11,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 23:22:11,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 23:22:11,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 23:22:11,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 23:22:11,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 23:22:11,572 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 23:22:11,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 23:22:11,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 23:22:11,573 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 23:22:11,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 23:22:11,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 23:22:11,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 23:22:11,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 23:22:11,574 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 23:22:11,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 23:22:11,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 23:22:11,575 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 23:22:11,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 23:22:11,575 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 23:22:11,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 23:22:11,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 23:22:11,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 23:22:11,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 23:22:11,578 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 23:22:11,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 23:22:11,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 23:22:11,578 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 23:22:11,578 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 23:22:11,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 23:22:11,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 23:22:11,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 23:22:11,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:22:11,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 23:22:11,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 23:22:11,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 23:22:11,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 23:22:11,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 23:22:11,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 23:22:11,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 23:22:11,580 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 23:22:11,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 23:22:11,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 23:22:11,582 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 23:22:11,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 23:22:11,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 23:22:11,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 23:22:11,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 23:22:11,810 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 23:22:11,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-18 23:22:12,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 23:22:13,226 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 23:22:13,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-18 23:22:13,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04371e80a/e3cede56be334b51b1d51550fb5265ff/FLAGa41011fdd [2023-12-18 23:22:13,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04371e80a/e3cede56be334b51b1d51550fb5265ff [2023-12-18 23:22:13,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 23:22:13,268 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 23:22:13,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 23:22:13,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 23:22:13,272 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 23:22:13,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:22:13" (1/1) ... [2023-12-18 23:22:13,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@589c2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:13, skipping insertion in model container [2023-12-18 23:22:13,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:22:13" (1/1) ... [2023-12-18 23:22:13,369 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 23:22:13,609 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c[6450,6463] [2023-12-18 23:22:13,665 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c[13511,13524] [2023-12-18 23:22:14,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:22:14,165 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 23:22:14,193 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c[6450,6463] [2023-12-18 23:22:14,199 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c[13511,13524] [2023-12-18 23:22:14,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 23:22:14,500 INFO L206 MainTranslator]: Completed translation [2023-12-18 23:22:14,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14 WrapperNode [2023-12-18 23:22:14,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 23:22:14,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 23:22:14,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 23:22:14,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 23:22:14,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:14,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:14,719 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-12-18 23:22:14,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 23:22:14,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 23:22:14,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 23:22:14,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 23:22:14,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:14,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:14,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:14,988 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-18 23:22:14,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:14,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:15,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:15,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:15,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:15,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:15,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 23:22:15,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 23:22:15,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 23:22:15,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 23:22:15,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (1/1) ... [2023-12-18 23:22:15,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 23:22:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:15,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 23:22:15,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 23:22:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 23:22:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 23:22:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 23:22:15,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 23:22:15,334 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 23:22:15,336 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 23:22:18,098 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 23:22:18,147 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 23:22:18,147 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 23:22:18,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:22:18 BoogieIcfgContainer [2023-12-18 23:22:18,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 23:22:18,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 23:22:18,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 23:22:18,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 23:22:18,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:22:13" (1/3) ... [2023-12-18 23:22:18,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a3c30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:22:18, skipping insertion in model container [2023-12-18 23:22:18,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:22:14" (2/3) ... [2023-12-18 23:22:18,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a3c30e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:22:18, skipping insertion in model container [2023-12-18 23:22:18,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:22:18" (3/3) ... [2023-12-18 23:22:18,153 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-18 23:22:18,164 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 23:22:18,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-18 23:22:18,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 23:22:18,207 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;@366b544e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 23:22:18,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-18 23:22:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:22:18,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:18,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:18,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:18,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2106044916, now seen corresponding path program 1 times [2023-12-18 23:22:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202970076] [2023-12-18 23:22:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:18,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202970076] [2023-12-18 23:22:18,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202970076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:18,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:18,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:22:18,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628319508] [2023-12-18 23:22:18,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:18,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 23:22:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:18,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 23:22:18,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:22:18,372 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:18,490 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-12-18 23:22:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 23:22:18,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-18 23:22:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:18,515 INFO L225 Difference]: With dead ends: 1597 [2023-12-18 23:22:18,516 INFO L226 Difference]: Without dead ends: 805 [2023-12-18 23:22:18,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 23:22:18,522 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:18,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-18 23:22:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-18 23:22:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-12-18 23:22:18,579 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-12-18 23:22:18,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:18,580 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-12-18 23:22:18,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-12-18 23:22:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 23:22:18,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:18,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:18,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 23:22:18,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:18,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1602116366, now seen corresponding path program 1 times [2023-12-18 23:22:18,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:18,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449578771] [2023-12-18 23:22:18,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:18,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:18,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449578771] [2023-12-18 23:22:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449578771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:18,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:18,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:22:18,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942804425] [2023-12-18 23:22:18,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:22:18,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:18,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:22:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:22:18,838 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:18,954 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-12-18 23:22:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:22:18,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-18 23:22:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:18,970 INFO L225 Difference]: With dead ends: 839 [2023-12-18 23:22:18,970 INFO L226 Difference]: Without dead ends: 805 [2023-12-18 23:22:18,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:22:18,971 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:18,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:22:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-18 23:22:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-12-18 23:22:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-12-18 23:22:18,987 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-12-18 23:22:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:18,987 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-12-18 23:22:18,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-12-18 23:22:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-18 23:22:18,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:18,988 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] [2023-12-18 23:22:18,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 23:22:18,989 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:18,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1530210848, now seen corresponding path program 1 times [2023-12-18 23:22:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:18,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559787011] [2023-12-18 23:22:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559787011] [2023-12-18 23:22:19,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559787011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419491312] [2023-12-18 23:22:19,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:19,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:19,080 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:19,170 INFO L93 Difference]: Finished difference Result 991 states and 1802 transitions. [2023-12-18 23:22:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 23:22:19,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-18 23:22:19,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:19,174 INFO L225 Difference]: With dead ends: 991 [2023-12-18 23:22:19,174 INFO L226 Difference]: Without dead ends: 960 [2023-12-18 23:22:19,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-18 23:22:19,175 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:19,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 23:22:19,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-12-18 23:22:19,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 834. [2023-12-18 23:22:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8677884615384615) internal successors, (1554), 833 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1554 transitions. [2023-12-18 23:22:19,188 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1554 transitions. Word has length 32 [2023-12-18 23:22:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:19,188 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1554 transitions. [2023-12-18 23:22:19,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1554 transitions. [2023-12-18 23:22:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:22:19,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:19,189 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] [2023-12-18 23:22:19,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 23:22:19,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:19,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:19,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1777422384, now seen corresponding path program 1 times [2023-12-18 23:22:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:19,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100329840] [2023-12-18 23:22:19,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:19,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100329840] [2023-12-18 23:22:19,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100329840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:19,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157692333] [2023-12-18 23:22:19,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,234 INFO L87 Difference]: Start difference. First operand 834 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:19,275 INFO L93 Difference]: Finished difference Result 943 states and 1725 transitions. [2023-12-18 23:22:19,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:19,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-18 23:22:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:19,279 INFO L225 Difference]: With dead ends: 943 [2023-12-18 23:22:19,279 INFO L226 Difference]: Without dead ends: 883 [2023-12-18 23:22:19,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,280 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:19,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:19,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-18 23:22:19,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2023-12-18 23:22:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8494868871151653) internal successors, (1622), 878 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1622 transitions. [2023-12-18 23:22:19,293 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1622 transitions. Word has length 34 [2023-12-18 23:22:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:19,293 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1622 transitions. [2023-12-18 23:22:19,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1622 transitions. [2023-12-18 23:22:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-18 23:22:19,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:19,294 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] [2023-12-18 23:22:19,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-18 23:22:19,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:19,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1775277432, now seen corresponding path program 1 times [2023-12-18 23:22:19,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:19,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054680281] [2023-12-18 23:22:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:19,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054680281] [2023-12-18 23:22:19,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054680281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798374126] [2023-12-18 23:22:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:19,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:19,392 INFO L87 Difference]: Start difference. First operand 879 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:19,449 INFO L93 Difference]: Finished difference Result 986 states and 1786 transitions. [2023-12-18 23:22:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-18 23:22:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:19,452 INFO L225 Difference]: With dead ends: 986 [2023-12-18 23:22:19,452 INFO L226 Difference]: Without dead ends: 881 [2023-12-18 23:22:19,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-18 23:22:19,453 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:19,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1591 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-12-18 23:22:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2023-12-18 23:22:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2023-12-18 23:22:19,466 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 34 [2023-12-18 23:22:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:19,466 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2023-12-18 23:22:19,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2023-12-18 23:22:19,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-18 23:22:19,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:19,470 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] [2023-12-18 23:22:19,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-18 23:22:19,470 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:19,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 672590802, now seen corresponding path program 1 times [2023-12-18 23:22:19,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:19,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880133774] [2023-12-18 23:22:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:19,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880133774] [2023-12-18 23:22:19,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880133774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 23:22:19,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953936616] [2023-12-18 23:22:19,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 23:22:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 23:22:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:22:19,579 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:19,612 INFO L93 Difference]: Finished difference Result 887 states and 1629 transitions. [2023-12-18 23:22:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 23:22:19,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-18 23:22:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:19,616 INFO L225 Difference]: With dead ends: 887 [2023-12-18 23:22:19,616 INFO L226 Difference]: Without dead ends: 885 [2023-12-18 23:22:19,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 23:22:19,619 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:19,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-18 23:22:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2023-12-18 23:22:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8422247446083995) internal successors, (1623), 882 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1623 transitions. [2023-12-18 23:22:19,638 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1623 transitions. Word has length 35 [2023-12-18 23:22:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:19,638 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1623 transitions. [2023-12-18 23:22:19,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,638 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1623 transitions. [2023-12-18 23:22:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:22:19,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:19,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:19,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-18 23:22:19,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:19,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1662873624, now seen corresponding path program 1 times [2023-12-18 23:22:19,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:19,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714568473] [2023-12-18 23:22:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:19,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714568473] [2023-12-18 23:22:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714568473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:19,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383421985] [2023-12-18 23:22:19,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:19,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:19,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,665 INFO L87 Difference]: Start difference. First operand 883 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:19,685 INFO L93 Difference]: Finished difference Result 1085 states and 1923 transitions. [2023-12-18 23:22:19,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:19,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-18 23:22:19,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:19,689 INFO L225 Difference]: With dead ends: 1085 [2023-12-18 23:22:19,689 INFO L226 Difference]: Without dead ends: 976 [2023-12-18 23:22:19,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,691 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:19,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-18 23:22:19,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2023-12-18 23:22:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8045267489711934) internal successors, (1754), 973 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1754 transitions. [2023-12-18 23:22:19,709 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1754 transitions. Word has length 36 [2023-12-18 23:22:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:19,709 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1754 transitions. [2023-12-18 23:22:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1754 transitions. [2023-12-18 23:22:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 23:22:19,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:19,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:19,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-18 23:22:19,710 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:19,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1743360232, now seen corresponding path program 1 times [2023-12-18 23:22:19,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:19,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344439774] [2023-12-18 23:22:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:19,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344439774] [2023-12-18 23:22:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344439774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:19,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143786990] [2023-12-18 23:22:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,741 INFO L87 Difference]: Start difference. First operand 974 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:19,761 INFO L93 Difference]: Finished difference Result 1342 states and 2288 transitions. [2023-12-18 23:22:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:19,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-18 23:22:19,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:19,765 INFO L225 Difference]: With dead ends: 1342 [2023-12-18 23:22:19,765 INFO L226 Difference]: Without dead ends: 1142 [2023-12-18 23:22:19,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,766 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:19,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:19,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2023-12-18 23:22:19,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2023-12-18 23:22:19,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.7434094903339192) internal successors, (1984), 1139 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1984 transitions. [2023-12-18 23:22:19,782 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1984 transitions. Word has length 36 [2023-12-18 23:22:19,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:19,783 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1984 transitions. [2023-12-18 23:22:19,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1984 transitions. [2023-12-18 23:22:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-18 23:22:19,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:19,785 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] [2023-12-18 23:22:19,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 23:22:19,785 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:19,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:19,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1790190323, now seen corresponding path program 1 times [2023-12-18 23:22:19,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:19,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409725916] [2023-12-18 23:22:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:19,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:19,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409725916] [2023-12-18 23:22:19,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409725916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:19,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572575462] [2023-12-18 23:22:19,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:19,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,826 INFO L87 Difference]: Start difference. First operand 1140 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:19,849 INFO L93 Difference]: Finished difference Result 1531 states and 2558 transitions. [2023-12-18 23:22:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:19,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-18 23:22:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:19,853 INFO L225 Difference]: With dead ends: 1531 [2023-12-18 23:22:19,853 INFO L226 Difference]: Without dead ends: 1312 [2023-12-18 23:22:19,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:19,854 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:19,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-12-18 23:22:19,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2023-12-18 23:22:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1308 states have (on average 1.698776758409786) internal successors, (2222), 1309 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2222 transitions. [2023-12-18 23:22:19,872 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2222 transitions. Word has length 38 [2023-12-18 23:22:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:19,872 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2222 transitions. [2023-12-18 23:22:19,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2222 transitions. [2023-12-18 23:22:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:22:19,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:19,873 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] [2023-12-18 23:22:19,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-18 23:22:19,873 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:19,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:19,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1801881872, now seen corresponding path program 1 times [2023-12-18 23:22:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:19,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494694711] [2023-12-18 23:22:19,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-18 23:22:19,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:19,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494694711] [2023-12-18 23:22:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494694711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106677994] [2023-12-18 23:22:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:19,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:19,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:19,943 INFO L87 Difference]: Start difference. First operand 1310 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:20,029 INFO L93 Difference]: Finished difference Result 3034 states and 4670 transitions. [2023-12-18 23:22:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:20,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:22:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:20,036 INFO L225 Difference]: With dead ends: 3034 [2023-12-18 23:22:20,036 INFO L226 Difference]: Without dead ends: 2500 [2023-12-18 23:22:20,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:22:20,037 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:20,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2023-12-18 23:22:20,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1842. [2023-12-18 23:22:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1840 states have (on average 1.6141304347826086) internal successors, (2970), 1841 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2970 transitions. [2023-12-18 23:22:20,106 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2970 transitions. Word has length 50 [2023-12-18 23:22:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:20,106 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2970 transitions. [2023-12-18 23:22:20,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2970 transitions. [2023-12-18 23:22:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-18 23:22:20,107 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:20,107 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] [2023-12-18 23:22:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-18 23:22:20,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:20,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash 913148432, now seen corresponding path program 1 times [2023-12-18 23:22:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:20,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414116533] [2023-12-18 23:22:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-18 23:22:20,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:20,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414116533] [2023-12-18 23:22:20,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414116533] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:20,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:20,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:20,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457430502] [2023-12-18 23:22:20,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:20,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:20,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:20,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:20,162 INFO L87 Difference]: Start difference. First operand 1842 states and 2970 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:20,246 INFO L93 Difference]: Finished difference Result 3566 states and 5418 transitions. [2023-12-18 23:22:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:20,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-18 23:22:20,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:20,253 INFO L225 Difference]: With dead ends: 3566 [2023-12-18 23:22:20,253 INFO L226 Difference]: Without dead ends: 3032 [2023-12-18 23:22:20,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:22:20,255 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:20,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:20,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2023-12-18 23:22:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2642. [2023-12-18 23:22:20,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2640 states have (on average 1.5462121212121211) internal successors, (4082), 2641 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4082 transitions. [2023-12-18 23:22:20,298 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4082 transitions. Word has length 50 [2023-12-18 23:22:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:20,298 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 4082 transitions. [2023-12-18 23:22:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4082 transitions. [2023-12-18 23:22:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 23:22:20,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:20,299 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:22:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-18 23:22:20,299 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:20,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 615190968, now seen corresponding path program 1 times [2023-12-18 23:22:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723133764] [2023-12-18 23:22:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:20,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:20,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723133764] [2023-12-18 23:22:20,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723133764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:20,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:20,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245012832] [2023-12-18 23:22:20,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:20,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:20,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:20,342 INFO L87 Difference]: Start difference. First operand 2642 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:20,376 INFO L93 Difference]: Finished difference Result 4005 states and 6032 transitions. [2023-12-18 23:22:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:20,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-18 23:22:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:20,382 INFO L225 Difference]: With dead ends: 4005 [2023-12-18 23:22:20,382 INFO L226 Difference]: Without dead ends: 2139 [2023-12-18 23:22:20,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:20,384 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:20,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-12-18 23:22:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2023-12-18 23:22:20,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2135 states have (on average 1.5836065573770493) internal successors, (3381), 2136 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3381 transitions. [2023-12-18 23:22:20,416 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3381 transitions. Word has length 52 [2023-12-18 23:22:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:20,417 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 3381 transitions. [2023-12-18 23:22:20,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3381 transitions. [2023-12-18 23:22:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-18 23:22:20,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:20,417 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] [2023-12-18 23:22:20,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-18 23:22:20,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:20,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash -759813067, now seen corresponding path program 1 times [2023-12-18 23:22:20,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:20,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911068938] [2023-12-18 23:22:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:20,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:20,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:22:20,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:20,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911068938] [2023-12-18 23:22:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911068938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:20,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:20,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-18 23:22:20,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921346736] [2023-12-18 23:22:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:20,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-18 23:22:20,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-18 23:22:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-18 23:22:20,483 INFO L87 Difference]: Start difference. First operand 2137 states and 3381 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:20,560 INFO L93 Difference]: Finished difference Result 3297 states and 5041 transitions. [2023-12-18 23:22:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-18 23:22:20,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-18 23:22:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:20,567 INFO L225 Difference]: With dead ends: 3297 [2023-12-18 23:22:20,567 INFO L226 Difference]: Without dead ends: 2911 [2023-12-18 23:22:20,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-18 23:22:20,568 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:20,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2023-12-18 23:22:20,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2521. [2023-12-18 23:22:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2519 states have (on average 1.5581579992060341) internal successors, (3925), 2520 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3925 transitions. [2023-12-18 23:22:20,612 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3925 transitions. Word has length 52 [2023-12-18 23:22:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:20,612 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3925 transitions. [2023-12-18 23:22:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3925 transitions. [2023-12-18 23:22:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-18 23:22:20,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:20,613 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:22:20,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 23:22:20,613 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:20,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1640470092, now seen corresponding path program 1 times [2023-12-18 23:22:20,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:20,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196381593] [2023-12-18 23:22:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:20,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:20,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:20,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196381593] [2023-12-18 23:22:20,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196381593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:20,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:20,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:20,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545975982] [2023-12-18 23:22:20,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:20,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:20,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:20,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:20,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:20,669 INFO L87 Difference]: Start difference. First operand 2521 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:20,698 INFO L93 Difference]: Finished difference Result 3389 states and 5151 transitions. [2023-12-18 23:22:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-18 23:22:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:20,702 INFO L225 Difference]: With dead ends: 3389 [2023-12-18 23:22:20,702 INFO L226 Difference]: Without dead ends: 1659 [2023-12-18 23:22:20,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:20,704 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:20,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2023-12-18 23:22:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1657. [2023-12-18 23:22:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1655 states have (on average 1.6211480362537765) internal successors, (2683), 1656 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2683 transitions. [2023-12-18 23:22:20,729 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2683 transitions. Word has length 53 [2023-12-18 23:22:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:20,729 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2683 transitions. [2023-12-18 23:22:20,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2683 transitions. [2023-12-18 23:22:20,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-18 23:22:20,730 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:20,730 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] [2023-12-18 23:22:20,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 23:22:20,730 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:20,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1012299426, now seen corresponding path program 1 times [2023-12-18 23:22:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:20,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896283380] [2023-12-18 23:22:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:20,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:20,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896283380] [2023-12-18 23:22:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896283380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 23:22:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656976813] [2023-12-18 23:22:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:20,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:20,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:20,790 INFO L87 Difference]: Start difference. First operand 1657 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:20,813 INFO L93 Difference]: Finished difference Result 2093 states and 3288 transitions. [2023-12-18 23:22:20,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:20,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-18 23:22:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:20,816 INFO L225 Difference]: With dead ends: 2093 [2023-12-18 23:22:20,816 INFO L226 Difference]: Without dead ends: 1227 [2023-12-18 23:22:20,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:20,819 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:20,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 23:22:20,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-12-18 23:22:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1225. [2023-12-18 23:22:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1223 states have (on average 1.6933769419460343) internal successors, (2071), 1224 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2071 transitions. [2023-12-18 23:22:20,837 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2071 transitions. Word has length 55 [2023-12-18 23:22:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:20,837 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 2071 transitions. [2023-12-18 23:22:20,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2071 transitions. [2023-12-18 23:22:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-18 23:22:20,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:20,838 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:22:20,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-18 23:22:20,838 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:20,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1129129232, now seen corresponding path program 1 times [2023-12-18 23:22:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:20,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809327305] [2023-12-18 23:22:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:20,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:22,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809327305] [2023-12-18 23:22:22,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809327305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:22,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523732513] [2023-12-18 23:22:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:22,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:22,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 23:22:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:22,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-18 23:22:22,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:22:22,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 23:22:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523732513] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:23,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:23,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-18 23:22:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039887581] [2023-12-18 23:22:23,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:23,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-18 23:22:23,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-18 23:22:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-18 23:22:23,044 INFO L87 Difference]: Start difference. First operand 1225 states and 2071 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:25,481 INFO L93 Difference]: Finished difference Result 3468 states and 5019 transitions. [2023-12-18 23:22:25,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-18 23:22:25,481 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-18 23:22:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:25,488 INFO L225 Difference]: With dead ends: 3468 [2023-12-18 23:22:25,488 INFO L226 Difference]: Without dead ends: 3034 [2023-12-18 23:22:25,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-18 23:22:25,490 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 15532 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15532 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:25,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15532 Valid, 6234 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-18 23:22:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2023-12-18 23:22:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 2846. [2023-12-18 23:22:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2844 states have (on average 1.4388185654008439) internal successors, (4092), 2845 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 4092 transitions. [2023-12-18 23:22:25,549 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 4092 transitions. Word has length 57 [2023-12-18 23:22:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:25,549 INFO L495 AbstractCegarLoop]: Abstraction has 2846 states and 4092 transitions. [2023-12-18 23:22:25,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 4092 transitions. [2023-12-18 23:22:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 23:22:25,550 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:25,550 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] [2023-12-18 23:22:25,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:25,758 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 [2023-12-18 23:22:25,758 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:25,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1944087233, now seen corresponding path program 1 times [2023-12-18 23:22:25,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:25,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779527526] [2023-12-18 23:22:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:26,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:26,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779527526] [2023-12-18 23:22:26,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779527526] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:26,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925059577] [2023-12-18 23:22:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:26,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:26,528 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:26,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 23:22:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:26,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:26,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:27,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:27,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925059577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:27,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:27,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-18 23:22:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581094617] [2023-12-18 23:22:27,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:27,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-18 23:22:27,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-18 23:22:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-18 23:22:27,689 INFO L87 Difference]: Start difference. First operand 2846 states and 4092 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:28,624 INFO L93 Difference]: Finished difference Result 6964 states and 9282 transitions. [2023-12-18 23:22:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-18 23:22:28,625 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-18 23:22:28,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:28,641 INFO L225 Difference]: With dead ends: 6964 [2023-12-18 23:22:28,641 INFO L226 Difference]: Without dead ends: 5186 [2023-12-18 23:22:28,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:22:28,646 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 19428 mSDsluCounter, 7733 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19428 SdHoareTripleChecker+Valid, 9226 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:28,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19428 Valid, 9226 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:22:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2023-12-18 23:22:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 4800. [2023-12-18 23:22:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4798 states have (on average 1.353897457273864) internal successors, (6496), 4799 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 6496 transitions. [2023-12-18 23:22:28,767 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 6496 transitions. Word has length 58 [2023-12-18 23:22:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:28,767 INFO L495 AbstractCegarLoop]: Abstraction has 4800 states and 6496 transitions. [2023-12-18 23:22:28,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:28,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 6496 transitions. [2023-12-18 23:22:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 23:22:28,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:28,771 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:22:28,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:28,977 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 [2023-12-18 23:22:28,977 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:28,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:28,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1421483023, now seen corresponding path program 1 times [2023-12-18 23:22:28,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:28,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102978038] [2023-12-18 23:22:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:29,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:29,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102978038] [2023-12-18 23:22:29,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102978038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:29,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721045718] [2023-12-18 23:22:29,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:29,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:29,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:29,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:29,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 23:22:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:29,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:29,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:29,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721045718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:30,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:30,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-18 23:22:30,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801070157] [2023-12-18 23:22:30,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:30,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:22:30,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:30,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:22:30,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:22:30,183 INFO L87 Difference]: Start difference. First operand 4800 states and 6496 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:30,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:30,774 INFO L93 Difference]: Finished difference Result 11761 states and 15192 transitions. [2023-12-18 23:22:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-18 23:22:30,774 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-18 23:22:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:30,785 INFO L225 Difference]: With dead ends: 11761 [2023-12-18 23:22:30,785 INFO L226 Difference]: Without dead ends: 8339 [2023-12-18 23:22:30,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 23:22:30,789 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 10583 mSDsluCounter, 6230 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10583 SdHoareTripleChecker+Valid, 7722 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:30,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10583 Valid, 7722 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:22:30,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8339 states. [2023-12-18 23:22:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8339 to 8101. [2023-12-18 23:22:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8101 states, 8099 states have (on average 1.3080627237930609) internal successors, (10594), 8100 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8101 states to 8101 states and 10594 transitions. [2023-12-18 23:22:30,988 INFO L78 Accepts]: Start accepts. Automaton has 8101 states and 10594 transitions. Word has length 58 [2023-12-18 23:22:30,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:30,988 INFO L495 AbstractCegarLoop]: Abstraction has 8101 states and 10594 transitions. [2023-12-18 23:22:30,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:30,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8101 states and 10594 transitions. [2023-12-18 23:22:30,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-18 23:22:30,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:30,989 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:22:30,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:31,195 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 [2023-12-18 23:22:31,197 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:31,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash -547926257, now seen corresponding path program 1 times [2023-12-18 23:22:31,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:31,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825113211] [2023-12-18 23:22:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:31,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825113211] [2023-12-18 23:22:31,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825113211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:31,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648097835] [2023-12-18 23:22:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:31,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:31,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:31,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:31,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 23:22:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:31,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:22:31,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:32,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:32,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648097835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:32,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:32,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-18 23:22:32,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277881952] [2023-12-18 23:22:32,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-18 23:22:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:32,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-18 23:22:32,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-18 23:22:32,631 INFO L87 Difference]: Start difference. First operand 8101 states and 10594 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:33,305 INFO L93 Difference]: Finished difference Result 14996 states and 19202 transitions. [2023-12-18 23:22:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-18 23:22:33,305 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-18 23:22:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:33,319 INFO L225 Difference]: With dead ends: 14996 [2023-12-18 23:22:33,319 INFO L226 Difference]: Without dead ends: 8795 [2023-12-18 23:22:33,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-18 23:22:33,326 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 15031 mSDsluCounter, 4775 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15031 SdHoareTripleChecker+Valid, 6275 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:33,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15031 Valid, 6275 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 23:22:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2023-12-18 23:22:33,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 8213. [2023-12-18 23:22:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 8211 states have (on average 1.2952137376689807) internal successors, (10635), 8212 states have internal predecessors, (10635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 10635 transitions. [2023-12-18 23:22:33,544 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 10635 transitions. Word has length 58 [2023-12-18 23:22:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:33,544 INFO L495 AbstractCegarLoop]: Abstraction has 8213 states and 10635 transitions. [2023-12-18 23:22:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 10635 transitions. [2023-12-18 23:22:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-18 23:22:33,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:33,545 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-18 23:22:33,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:33,751 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 [2023-12-18 23:22:33,751 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:33,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 521807150, now seen corresponding path program 1 times [2023-12-18 23:22:33,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:33,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998595852] [2023-12-18 23:22:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:33,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:34,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998595852] [2023-12-18 23:22:34,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998595852] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627701549] [2023-12-18 23:22:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:34,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:34,430 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:34,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 23:22:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:34,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-18 23:22:34,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:35,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:35,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627701549] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:35,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-18 23:22:35,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039617195] [2023-12-18 23:22:35,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:35,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-18 23:22:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-18 23:22:35,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-18 23:22:35,882 INFO L87 Difference]: Start difference. First operand 8213 states and 10635 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:40,594 INFO L93 Difference]: Finished difference Result 15073 states and 19120 transitions. [2023-12-18 23:22:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-18 23:22:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-18 23:22:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:40,608 INFO L225 Difference]: With dead ends: 15073 [2023-12-18 23:22:40,608 INFO L226 Difference]: Without dead ends: 10305 [2023-12-18 23:22:40,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-12-18 23:22:40,617 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 14987 mSDsluCounter, 19970 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14987 SdHoareTripleChecker+Valid, 21483 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:40,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14987 Valid, 21483 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 23:22:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10305 states. [2023-12-18 23:22:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10305 to 5611. [2023-12-18 23:22:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5611 states, 5609 states have (on average 1.3207345337849885) internal successors, (7408), 5610 states have internal predecessors, (7408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 7408 transitions. [2023-12-18 23:22:40,858 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 7408 transitions. Word has length 59 [2023-12-18 23:22:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:40,858 INFO L495 AbstractCegarLoop]: Abstraction has 5611 states and 7408 transitions. [2023-12-18 23:22:40,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 7408 transitions. [2023-12-18 23:22:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-18 23:22:40,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:40,859 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] [2023-12-18 23:22:40,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:41,064 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 [2023-12-18 23:22:41,065 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:41,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash 266400177, now seen corresponding path program 1 times [2023-12-18 23:22:41,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:41,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214701346] [2023-12-18 23:22:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:41,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:41,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214701346] [2023-12-18 23:22:41,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214701346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:41,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399519777] [2023-12-18 23:22:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:41,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:41,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:41,696 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:41,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 23:22:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:41,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-18 23:22:41,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:42,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:43,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399519777] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:43,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:43,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-18 23:22:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500475916] [2023-12-18 23:22:43,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-18 23:22:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-18 23:22:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-12-18 23:22:43,161 INFO L87 Difference]: Start difference. First operand 5611 states and 7408 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:44,420 INFO L93 Difference]: Finished difference Result 6941 states and 9052 transitions. [2023-12-18 23:22:44,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-18 23:22:44,420 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-18 23:22:44,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:44,424 INFO L225 Difference]: With dead ends: 6941 [2023-12-18 23:22:44,425 INFO L226 Difference]: Without dead ends: 4337 [2023-12-18 23:22:44,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 23:22:44,428 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 9668 mSDsluCounter, 19248 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9668 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:44,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9668 Valid, 20741 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 23:22:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4337 states. [2023-12-18 23:22:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4337 to 4233. [2023-12-18 23:22:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4233 states, 4231 states have (on average 1.3486173481446466) internal successors, (5706), 4232 states have internal predecessors, (5706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4233 states to 4233 states and 5706 transitions. [2023-12-18 23:22:44,547 INFO L78 Accepts]: Start accepts. Automaton has 4233 states and 5706 transitions. Word has length 60 [2023-12-18 23:22:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:44,548 INFO L495 AbstractCegarLoop]: Abstraction has 4233 states and 5706 transitions. [2023-12-18 23:22:44,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:44,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4233 states and 5706 transitions. [2023-12-18 23:22:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-18 23:22:44,548 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:44,548 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] [2023-12-18 23:22:44,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-18 23:22:44,753 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 [2023-12-18 23:22:44,754 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:44,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1684968360, now seen corresponding path program 1 times [2023-12-18 23:22:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647018559] [2023-12-18 23:22:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647018559] [2023-12-18 23:22:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647018559] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 23:22:44,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 23:22:44,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 23:22:44,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852946004] [2023-12-18 23:22:44,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 23:22:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 23:22:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 23:22:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:44,799 INFO L87 Difference]: Start difference. First operand 4233 states and 5706 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:47,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:47,521 INFO L93 Difference]: Finished difference Result 5737 states and 8579 transitions. [2023-12-18 23:22:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 23:22:47,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-18 23:22:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:47,527 INFO L225 Difference]: With dead ends: 5737 [2023-12-18 23:22:47,527 INFO L226 Difference]: Without dead ends: 4984 [2023-12-18 23:22:47,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 23:22:47,530 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 824 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:47,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 143 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-18 23:22:47,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2023-12-18 23:22:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 4984. [2023-12-18 23:22:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4982 states have (on average 1.4213167402649538) internal successors, (7081), 4983 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7081 transitions. [2023-12-18 23:22:47,708 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7081 transitions. Word has length 60 [2023-12-18 23:22:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:47,708 INFO L495 AbstractCegarLoop]: Abstraction has 4984 states and 7081 transitions. [2023-12-18 23:22:47,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7081 transitions. [2023-12-18 23:22:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:22:47,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:47,710 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:22:47,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-18 23:22:47,710 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:22:47,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:22:47,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1950336645, now seen corresponding path program 1 times [2023-12-18 23:22:47,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:22:47,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328059092] [2023-12-18 23:22:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:22:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:22:48,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328059092] [2023-12-18 23:22:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328059092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:22:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825924984] [2023-12-18 23:22:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:22:48,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:22:48,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:22:48,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:22:48,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 23:22:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:22:48,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-18 23:22:48,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:22:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:48,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:22:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:22:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825924984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:22:50,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:22:50,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-18 23:22:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949607577] [2023-12-18 23:22:50,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:22:50,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-18 23:22:50,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:22:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-18 23:22:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-18 23:22:50,263 INFO L87 Difference]: Start difference. First operand 4984 states and 7081 transitions. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:22:59,630 INFO L93 Difference]: Finished difference Result 12212 states and 16111 transitions. [2023-12-18 23:22:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-18 23:22:59,632 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-18 23:22:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:22:59,641 INFO L225 Difference]: With dead ends: 12212 [2023-12-18 23:22:59,641 INFO L226 Difference]: Without dead ends: 9526 [2023-12-18 23:22:59,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=4645, Invalid=27575, Unknown=0, NotChecked=0, Total=32220 [2023-12-18 23:22:59,651 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 28784 mSDsluCounter, 16111 mSDsCounter, 0 mSdLazyCounter, 1863 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28784 SdHoareTripleChecker+Valid, 17652 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:22:59,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28784 Valid, 17652 Invalid, 1963 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1863 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 23:22:59,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9526 states. [2023-12-18 23:22:59,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9526 to 7230. [2023-12-18 23:22:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7230 states, 7228 states have (on average 1.3592971776425014) internal successors, (9825), 7229 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7230 states to 7230 states and 9825 transitions. [2023-12-18 23:22:59,986 INFO L78 Accepts]: Start accepts. Automaton has 7230 states and 9825 transitions. Word has length 97 [2023-12-18 23:22:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:22:59,986 INFO L495 AbstractCegarLoop]: Abstraction has 7230 states and 9825 transitions. [2023-12-18 23:22:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:22:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 7230 states and 9825 transitions. [2023-12-18 23:22:59,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-18 23:22:59,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:22:59,988 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-18 23:22:59,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-18 23:23:00,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:00,189 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:00,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 933577673, now seen corresponding path program 1 times [2023-12-18 23:23:00,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:00,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865080720] [2023-12-18 23:23:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:00,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865080720] [2023-12-18 23:23:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865080720] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666849992] [2023-12-18 23:23:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:00,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:00,701 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:00,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 23:23:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:00,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-18 23:23:00,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:02,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:11,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666849992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:11,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:11,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 60 [2023-12-18 23:23:11,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303703369] [2023-12-18 23:23:11,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:11,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-18 23:23:11,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:11,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-18 23:23:11,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=3109, Unknown=0, NotChecked=0, Total=3540 [2023-12-18 23:23:11,122 INFO L87 Difference]: Start difference. First operand 7230 states and 9825 transitions. Second operand has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:23:43,907 INFO L93 Difference]: Finished difference Result 21011 states and 26703 transitions. [2023-12-18 23:23:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 320 states. [2023-12-18 23:23:43,907 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-18 23:23:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:23:43,922 INFO L225 Difference]: With dead ends: 21011 [2023-12-18 23:23:43,923 INFO L226 Difference]: Without dead ends: 16952 [2023-12-18 23:23:43,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58781 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=17856, Invalid=124650, Unknown=0, NotChecked=0, Total=142506 [2023-12-18 23:23:43,941 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 29927 mSDsluCounter, 30685 mSDsCounter, 0 mSdLazyCounter, 3606 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29927 SdHoareTripleChecker+Valid, 32278 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 3606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-18 23:23:43,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29927 Valid, 32278 Invalid, 3957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [351 Valid, 3606 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-18 23:23:43,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16952 states. [2023-12-18 23:23:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16952 to 8159. [2023-12-18 23:23:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8159 states, 8157 states have (on average 1.3338237096971925) internal successors, (10880), 8158 states have internal predecessors, (10880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8159 states to 8159 states and 10880 transitions. [2023-12-18 23:23:44,514 INFO L78 Accepts]: Start accepts. Automaton has 8159 states and 10880 transitions. Word has length 97 [2023-12-18 23:23:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:23:44,514 INFO L495 AbstractCegarLoop]: Abstraction has 8159 states and 10880 transitions. [2023-12-18 23:23:44,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.4) internal successors, (264), 60 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:23:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8159 states and 10880 transitions. [2023-12-18 23:23:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-18 23:23:44,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:23:44,516 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:23:44,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 23:23:44,725 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,SelfDestructingSolverStorable23 [2023-12-18 23:23:44,731 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:23:44,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:23:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash -237249868, now seen corresponding path program 1 times [2023-12-18 23:23:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:23:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104707997] [2023-12-18 23:23:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:44,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:23:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-18 23:23:45,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:23:45,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104707997] [2023-12-18 23:23:45,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104707997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:23:45,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711333732] [2023-12-18 23:23:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:23:45,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:23:45,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:23:45,456 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:23:45,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 23:23:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:23:45,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-18 23:23:45,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:23:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:46,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:23:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:23:49,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711333732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:23:49,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:23:49,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2023-12-18 23:23:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444002887] [2023-12-18 23:23:49,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:23:49,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-18 23:23:49,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:23:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-18 23:23:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2419, Unknown=0, NotChecked=0, Total=2652 [2023-12-18 23:23:49,075 INFO L87 Difference]: Start difference. First operand 8159 states and 10880 transitions. Second operand has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:24:12,575 INFO L93 Difference]: Finished difference Result 14240 states and 18126 transitions. [2023-12-18 23:24:12,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-12-18 23:24:12,575 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-18 23:24:12,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:24:12,584 INFO L225 Difference]: With dead ends: 14240 [2023-12-18 23:24:12,584 INFO L226 Difference]: Without dead ends: 11532 [2023-12-18 23:24:12,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16843 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=7233, Invalid=43617, Unknown=0, NotChecked=0, Total=50850 [2023-12-18 23:24:12,589 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 25192 mSDsluCounter, 32248 mSDsCounter, 0 mSdLazyCounter, 4660 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25192 SdHoareTripleChecker+Valid, 33921 SdHoareTripleChecker+Invalid, 4917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 4660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:24:12,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25192 Valid, 33921 Invalid, 4917 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [257 Valid, 4660 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-18 23:24:12,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11532 states. [2023-12-18 23:24:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11532 to 8549. [2023-12-18 23:24:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8549 states, 8547 states have (on average 1.3254943254943254) internal successors, (11329), 8548 states have internal predecessors, (11329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8549 states to 8549 states and 11329 transitions. [2023-12-18 23:24:13,160 INFO L78 Accepts]: Start accepts. Automaton has 8549 states and 11329 transitions. Word has length 98 [2023-12-18 23:24:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:24:13,160 INFO L495 AbstractCegarLoop]: Abstraction has 8549 states and 11329 transitions. [2023-12-18 23:24:13,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.903846153846154) internal successors, (255), 52 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:24:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 8549 states and 11329 transitions. [2023-12-18 23:24:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 23:24:13,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:24:13,162 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:24:13,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-18 23:24:13,367 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,SelfDestructingSolverStorable24 [2023-12-18 23:24:13,367 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:24:13,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:24:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1927036061, now seen corresponding path program 1 times [2023-12-18 23:24:13,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:24:13,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059033220] [2023-12-18 23:24:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:13,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:24:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:14,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:24:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059033220] [2023-12-18 23:24:14,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059033220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:24:14,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363025402] [2023-12-18 23:24:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:24:14,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:24:14,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:24:14,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:24:14,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 23:24:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:24:14,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-18 23:24:14,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:24:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:16,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:24:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:24:18,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363025402] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:24:18,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:24:18,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20, 21] total 58 [2023-12-18 23:24:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504579735] [2023-12-18 23:24:18,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:24:18,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-18 23:24:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:24:18,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-18 23:24:18,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2023-12-18 23:24:18,695 INFO L87 Difference]: Start difference. First operand 8549 states and 11329 transitions. Second operand has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:25:00,581 INFO L93 Difference]: Finished difference Result 21871 states and 27457 transitions. [2023-12-18 23:25:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2023-12-18 23:25:00,581 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-18 23:25:00,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:25:00,596 INFO L225 Difference]: With dead ends: 21871 [2023-12-18 23:25:00,596 INFO L226 Difference]: Without dead ends: 20002 [2023-12-18 23:25:00,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48263 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=15068, Invalid=104302, Unknown=0, NotChecked=0, Total=119370 [2023-12-18 23:25:00,603 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 19078 mSDsluCounter, 34520 mSDsCounter, 0 mSdLazyCounter, 4287 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19078 SdHoareTripleChecker+Valid, 36153 SdHoareTripleChecker+Invalid, 4610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 4287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:25:00,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19078 Valid, 36153 Invalid, 4610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [323 Valid, 4287 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 23:25:00,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20002 states. [2023-12-18 23:25:01,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20002 to 17891. [2023-12-18 23:25:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17891 states, 17889 states have (on average 1.2727933366873498) internal successors, (22769), 17890 states have internal predecessors, (22769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:01,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17891 states to 17891 states and 22769 transitions. [2023-12-18 23:25:01,985 INFO L78 Accepts]: Start accepts. Automaton has 17891 states and 22769 transitions. Word has length 99 [2023-12-18 23:25:01,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:25:01,985 INFO L495 AbstractCegarLoop]: Abstraction has 17891 states and 22769 transitions. [2023-12-18 23:25:01,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.637931034482759) internal successors, (269), 58 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:25:01,985 INFO L276 IsEmpty]: Start isEmpty. Operand 17891 states and 22769 transitions. [2023-12-18 23:25:01,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-18 23:25:01,987 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:25:01,987 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 23:25:01,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 23:25:02,191 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,SelfDestructingSolverStorable25 [2023-12-18 23:25:02,192 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:25:02,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:25:02,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1042354079, now seen corresponding path program 1 times [2023-12-18 23:25:02,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:25:02,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430367930] [2023-12-18 23:25:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:25:02,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:25:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:25:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:03,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:25:03,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430367930] [2023-12-18 23:25:03,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430367930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:25:03,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087211924] [2023-12-18 23:25:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:25:03,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:25:03,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:25:03,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:25:03,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 23:25:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:25:03,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-18 23:25:03,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:25:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:05,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:25:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:25:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087211924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:25:11,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:25:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 21] total 63 [2023-12-18 23:25:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645392506] [2023-12-18 23:25:11,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:25:11,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-18 23:25:11,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:25:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-18 23:25:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3568, Unknown=0, NotChecked=0, Total=3906 [2023-12-18 23:25:11,707 INFO L87 Difference]: Start difference. First operand 17891 states and 22769 transitions. Second operand has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:27:56,831 INFO L93 Difference]: Finished difference Result 56942 states and 69988 transitions. [2023-12-18 23:27:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 500 states. [2023-12-18 23:27:56,832 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-18 23:27:56,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:27:56,899 INFO L225 Difference]: With dead ends: 56942 [2023-12-18 23:27:56,899 INFO L226 Difference]: Without dead ends: 48978 [2023-12-18 23:27:56,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131286 ImplicationChecksByTransitivity, 154.0s TimeCoverageRelationStatistics Valid=38252, Invalid=272554, Unknown=0, NotChecked=0, Total=310806 [2023-12-18 23:27:56,923 INFO L413 NwaCegarLoop]: 1653 mSDtfsCounter, 27086 mSDsluCounter, 38943 mSDsCounter, 0 mSdLazyCounter, 8180 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27086 SdHoareTripleChecker+Valid, 40596 SdHoareTripleChecker+Invalid, 8753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 8180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-12-18 23:27:56,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27086 Valid, 40596 Invalid, 8753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [573 Valid, 8180 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2023-12-18 23:27:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48978 states. [2023-12-18 23:27:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48978 to 25628. [2023-12-18 23:27:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25628 states, 25626 states have (on average 1.2546632326543354) internal successors, (32152), 25627 states have internal predecessors, (32152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25628 states to 25628 states and 32152 transitions. [2023-12-18 23:27:59,621 INFO L78 Accepts]: Start accepts. Automaton has 25628 states and 32152 transitions. Word has length 99 [2023-12-18 23:27:59,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:27:59,621 INFO L495 AbstractCegarLoop]: Abstraction has 25628 states and 32152 transitions. [2023-12-18 23:27:59,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.317460317460317) internal successors, (272), 63 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:27:59,621 INFO L276 IsEmpty]: Start isEmpty. Operand 25628 states and 32152 transitions. [2023-12-18 23:27:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 23:27:59,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:27:59,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:27:59,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-18 23:27:59,837 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,SelfDestructingSolverStorable26 [2023-12-18 23:27:59,838 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:27:59,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:27:59,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1115210756, now seen corresponding path program 1 times [2023-12-18 23:27:59,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:27:59,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480158125] [2023-12-18 23:27:59,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:27:59,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:27:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:00,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:28:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480158125] [2023-12-18 23:28:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480158125] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:28:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111762714] [2023-12-18 23:28:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:28:00,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:28:00,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:28:00,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:28:00,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 23:28:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:00,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-18 23:28:00,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:28:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:02,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:28:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:05,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111762714] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:28:05,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:28:05,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 62 [2023-12-18 23:28:05,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823566591] [2023-12-18 23:28:05,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:28:05,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-18 23:28:05,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:28:05,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-18 23:28:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3410, Unknown=0, NotChecked=0, Total=3782 [2023-12-18 23:28:05,577 INFO L87 Difference]: Start difference. First operand 25628 states and 32152 transitions. Second operand has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:28:27,497 INFO L93 Difference]: Finished difference Result 38497 states and 47431 transitions. [2023-12-18 23:28:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-12-18 23:28:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-18 23:28:27,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:28:27,542 INFO L225 Difference]: With dead ends: 38497 [2023-12-18 23:28:27,542 INFO L226 Difference]: Without dead ends: 33985 [2023-12-18 23:28:27,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12040 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=5036, Invalid=33576, Unknown=0, NotChecked=0, Total=38612 [2023-12-18 23:28:27,549 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 22772 mSDsluCounter, 31135 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22772 SdHoareTripleChecker+Valid, 32680 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:28:27,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22772 Valid, 32680 Invalid, 2505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [169 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-18 23:28:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33985 states. [2023-12-18 23:28:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33985 to 28477. [2023-12-18 23:28:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28477 states, 28475 states have (on average 1.2503248463564531) internal successors, (35603), 28476 states have internal predecessors, (35603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28477 states to 28477 states and 35603 transitions. [2023-12-18 23:28:30,702 INFO L78 Accepts]: Start accepts. Automaton has 28477 states and 35603 transitions. Word has length 100 [2023-12-18 23:28:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:28:30,702 INFO L495 AbstractCegarLoop]: Abstraction has 28477 states and 35603 transitions. [2023-12-18 23:28:30,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.564516129032258) internal successors, (283), 62 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:28:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 28477 states and 35603 transitions. [2023-12-18 23:28:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 23:28:30,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:28:30,704 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:28:30,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 23:28:30,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-18 23:28:30,909 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:28:30,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:28:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1530746744, now seen corresponding path program 1 times [2023-12-18 23:28:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:28:30,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159577175] [2023-12-18 23:28:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:28:30,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:28:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:28:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159577175] [2023-12-18 23:28:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159577175] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:28:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902580007] [2023-12-18 23:28:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:28:31,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:28:31,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:28:31,801 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:28:31,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-18 23:28:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:28:31,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-18 23:28:31,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:28:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:33,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:28:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:28:37,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902580007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:28:37,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:28:37,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 19] total 60 [2023-12-18 23:28:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637649278] [2023-12-18 23:28:37,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:28:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-18 23:28:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:28:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-18 23:28:37,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2023-12-18 23:28:37,008 INFO L87 Difference]: Start difference. First operand 28477 states and 35603 transitions. Second operand has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:29:15,864 INFO L93 Difference]: Finished difference Result 47555 states and 58639 transitions. [2023-12-18 23:29:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-18 23:29:15,865 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-18 23:29:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:29:15,898 INFO L225 Difference]: With dead ends: 47555 [2023-12-18 23:29:15,898 INFO L226 Difference]: Without dead ends: 41005 [2023-12-18 23:29:15,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22381 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=9415, Invalid=56377, Unknown=0, NotChecked=0, Total=65792 [2023-12-18 23:29:15,908 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 21675 mSDsluCounter, 33028 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21675 SdHoareTripleChecker+Valid, 34598 SdHoareTripleChecker+Invalid, 3255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-18 23:29:15,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21675 Valid, 34598 Invalid, 3255 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-18 23:29:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41005 states. [2023-12-18 23:29:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41005 to 35087. [2023-12-18 23:29:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35087 states, 35085 states have (on average 1.2423257802479692) internal successors, (43587), 35086 states have internal predecessors, (43587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35087 states to 35087 states and 43587 transitions. [2023-12-18 23:29:20,240 INFO L78 Accepts]: Start accepts. Automaton has 35087 states and 43587 transitions. Word has length 100 [2023-12-18 23:29:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:29:20,240 INFO L495 AbstractCegarLoop]: Abstraction has 35087 states and 43587 transitions. [2023-12-18 23:29:20,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.55) internal successors, (273), 60 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 35087 states and 43587 transitions. [2023-12-18 23:29:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-18 23:29:20,241 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:29:20,241 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:29:20,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-18 23:29:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-18 23:29:20,446 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:29:20,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:29:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash 977729156, now seen corresponding path program 1 times [2023-12-18 23:29:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:29:20,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721130813] [2023-12-18 23:29:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:29:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:29:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:29:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:21,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:29:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721130813] [2023-12-18 23:29:21,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721130813] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:29:21,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033245149] [2023-12-18 23:29:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:29:21,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:29:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:29:21,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:29:21,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-18 23:29:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:29:21,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-18 23:29:21,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:29:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:23,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:29:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 37 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:27,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033245149] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:29:27,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:29:27,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 21] total 60 [2023-12-18 23:29:27,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467955961] [2023-12-18 23:29:27,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:29:27,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-18 23:29:27,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:29:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-18 23:29:27,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3232, Unknown=0, NotChecked=0, Total=3540 [2023-12-18 23:29:27,013 INFO L87 Difference]: Start difference. First operand 35087 states and 43587 transitions. Second operand has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:29:45,754 INFO L93 Difference]: Finished difference Result 54075 states and 66296 transitions. [2023-12-18 23:29:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2023-12-18 23:29:45,755 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-18 23:29:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:29:45,801 INFO L225 Difference]: With dead ends: 54075 [2023-12-18 23:29:45,802 INFO L226 Difference]: Without dead ends: 47879 [2023-12-18 23:29:45,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10201 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=4981, Invalid=26881, Unknown=0, NotChecked=0, Total=31862 [2023-12-18 23:29:45,812 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 24306 mSDsluCounter, 31465 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24306 SdHoareTripleChecker+Valid, 33030 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-18 23:29:45,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24306 Valid, 33030 Invalid, 2578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [154 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-18 23:29:45,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47879 states. [2023-12-18 23:29:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47879 to 34916. [2023-12-18 23:29:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34916 states, 34914 states have (on average 1.242596093257719) internal successors, (43384), 34915 states have internal predecessors, (43384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34916 states to 34916 states and 43384 transitions. [2023-12-18 23:29:50,352 INFO L78 Accepts]: Start accepts. Automaton has 34916 states and 43384 transitions. Word has length 100 [2023-12-18 23:29:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:29:50,352 INFO L495 AbstractCegarLoop]: Abstraction has 34916 states and 43384 transitions. [2023-12-18 23:29:50,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.366666666666666) internal successors, (262), 60 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:29:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 34916 states and 43384 transitions. [2023-12-18 23:29:50,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-18 23:29:50,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:29:50,354 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:29:50,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-18 23:29:50,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:29:50,559 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:29:50,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:29:50,560 INFO L85 PathProgramCache]: Analyzing trace with hash -724713393, now seen corresponding path program 1 times [2023-12-18 23:29:50,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:29:50,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003349382] [2023-12-18 23:29:50,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:29:50,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:29:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:29:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:50,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:29:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003349382] [2023-12-18 23:29:50,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003349382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:29:50,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602617215] [2023-12-18 23:29:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:29:50,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:29:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:29:50,969 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:29:50,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-18 23:29:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:29:51,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:29:51,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:29:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:52,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:29:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:29:53,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602617215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:29:53,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:29:53,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 40 [2023-12-18 23:29:53,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630084255] [2023-12-18 23:29:53,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:29:53,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-18 23:29:53,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:29:53,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-18 23:29:53,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1393, Unknown=0, NotChecked=0, Total=1560 [2023-12-18 23:29:53,074 INFO L87 Difference]: Start difference. First operand 34916 states and 43384 transitions. Second operand has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:30:08,770 INFO L93 Difference]: Finished difference Result 115557 states and 141849 transitions. [2023-12-18 23:30:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-18 23:30:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-18 23:30:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:30:08,862 INFO L225 Difference]: With dead ends: 115557 [2023-12-18 23:30:08,862 INFO L226 Difference]: Without dead ends: 86759 [2023-12-18 23:30:08,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2588, Invalid=10984, Unknown=0, NotChecked=0, Total=13572 [2023-12-18 23:30:08,878 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 24262 mSDsluCounter, 15782 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24262 SdHoareTripleChecker+Valid, 17344 SdHoareTripleChecker+Invalid, 2375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-18 23:30:08,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24262 Valid, 17344 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-18 23:30:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86759 states. [2023-12-18 23:30:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86759 to 46254. [2023-12-18 23:30:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46254 states, 46252 states have (on average 1.2336115195018593) internal successors, (57057), 46253 states have internal predecessors, (57057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46254 states to 46254 states and 57057 transitions. [2023-12-18 23:30:15,341 INFO L78 Accepts]: Start accepts. Automaton has 46254 states and 57057 transitions. Word has length 101 [2023-12-18 23:30:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:30:15,342 INFO L495 AbstractCegarLoop]: Abstraction has 46254 states and 57057 transitions. [2023-12-18 23:30:15,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.825) internal successors, (273), 40 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 46254 states and 57057 transitions. [2023-12-18 23:30:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-18 23:30:15,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:30:15,343 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:30:15,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-18 23:30:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:15,548 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:30:15,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:30:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1000926603, now seen corresponding path program 1 times [2023-12-18 23:30:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:30:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930546575] [2023-12-18 23:30:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:30:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 42 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:30:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930546575] [2023-12-18 23:30:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930546575] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:30:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715142910] [2023-12-18 23:30:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:15,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:30:15,920 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:30:15,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-18 23:30:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:16,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:30:16,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:30:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:17,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:30:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:18,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715142910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:30:18,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:30:18,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-18 23:30:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96895469] [2023-12-18 23:30:18,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:30:18,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-18 23:30:18,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:30:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-18 23:30:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-18 23:30:18,523 INFO L87 Difference]: Start difference. First operand 46254 states and 57057 transitions. Second operand has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:30:34,613 INFO L93 Difference]: Finished difference Result 126207 states and 154194 transitions. [2023-12-18 23:30:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-18 23:30:34,613 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-18 23:30:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:30:34,710 INFO L225 Difference]: With dead ends: 126207 [2023-12-18 23:30:34,710 INFO L226 Difference]: Without dead ends: 97193 [2023-12-18 23:30:34,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-18 23:30:34,725 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 26350 mSDsluCounter, 25267 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26350 SdHoareTripleChecker+Valid, 26833 SdHoareTripleChecker+Invalid, 1939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-18 23:30:34,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26350 Valid, 26833 Invalid, 1939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-18 23:30:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97193 states. [2023-12-18 23:30:43,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97193 to 62347. [2023-12-18 23:30:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62347 states, 62345 states have (on average 1.2271874248135375) internal successors, (76509), 62346 states have internal predecessors, (76509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62347 states to 62347 states and 76509 transitions. [2023-12-18 23:30:43,744 INFO L78 Accepts]: Start accepts. Automaton has 62347 states and 76509 transitions. Word has length 101 [2023-12-18 23:30:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:30:43,744 INFO L495 AbstractCegarLoop]: Abstraction has 62347 states and 76509 transitions. [2023-12-18 23:30:43,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.658536585365853) internal successors, (273), 41 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:30:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 62347 states and 76509 transitions. [2023-12-18 23:30:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-18 23:30:43,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:30:43,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:30:43,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-18 23:30:43,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:43,950 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:30:43,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:30:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash 895693035, now seen corresponding path program 1 times [2023-12-18 23:30:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:30:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635966046] [2023-12-18 23:30:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:30:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:44,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:30:44,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635966046] [2023-12-18 23:30:44,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635966046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:30:44,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810960439] [2023-12-18 23:30:44,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:30:44,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:30:44,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:30:44,745 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:30:44,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-18 23:30:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:30:44,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-18 23:30:44,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:30:45,816 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:45,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:30:47,021 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:30:47,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810960439] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:30:47,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:30:47,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 15] total 46 [2023-12-18 23:30:47,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462938550] [2023-12-18 23:30:47,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:30:47,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-18 23:30:47,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:30:47,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-18 23:30:47,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1876, Unknown=0, NotChecked=0, Total=2070 [2023-12-18 23:30:47,025 INFO L87 Difference]: Start difference. First operand 62347 states and 76509 transitions. Second operand has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:31:16,523 INFO L93 Difference]: Finished difference Result 138853 states and 168651 transitions. [2023-12-18 23:31:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-18 23:31:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-18 23:31:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:31:16,639 INFO L225 Difference]: With dead ends: 138853 [2023-12-18 23:31:16,639 INFO L226 Difference]: Without dead ends: 99735 [2023-12-18 23:31:16,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20962 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=9769, Invalid=44287, Unknown=0, NotChecked=0, Total=54056 [2023-12-18 23:31:16,669 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 28608 mSDsluCounter, 27613 mSDsCounter, 0 mSdLazyCounter, 2932 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28608 SdHoareTripleChecker+Valid, 29177 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-18 23:31:16,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28608 Valid, 29177 Invalid, 3089 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [157 Valid, 2932 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-18 23:31:16,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99735 states. [2023-12-18 23:31:26,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99735 to 60908. [2023-12-18 23:31:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60908 states, 60906 states have (on average 1.227416018126293) internal successors, (74757), 60907 states have internal predecessors, (74757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60908 states to 60908 states and 74757 transitions. [2023-12-18 23:31:26,331 INFO L78 Accepts]: Start accepts. Automaton has 60908 states and 74757 transitions. Word has length 101 [2023-12-18 23:31:26,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:31:26,332 INFO L495 AbstractCegarLoop]: Abstraction has 60908 states and 74757 transitions. [2023-12-18 23:31:26,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.804347826086956) internal successors, (267), 46 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:31:26,332 INFO L276 IsEmpty]: Start isEmpty. Operand 60908 states and 74757 transitions. [2023-12-18 23:31:26,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 23:31:26,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:31:26,333 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:31:26,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-18 23:31:26,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:31:26,538 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:31:26,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:31:26,539 INFO L85 PathProgramCache]: Analyzing trace with hash 297369118, now seen corresponding path program 1 times [2023-12-18 23:31:26,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:31:26,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742758948] [2023-12-18 23:31:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:31:26,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:31:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:31:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:27,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:31:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742758948] [2023-12-18 23:31:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742758948] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:31:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251767483] [2023-12-18 23:31:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:31:27,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:31:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:31:27,952 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:31:27,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-18 23:31:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:31:28,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-18 23:31:28,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 23:31:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 30 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:31,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 23:31:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:31:38,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251767483] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 23:31:38,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 23:31:38,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 30, 31] total 86 [2023-12-18 23:31:38,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645013235] [2023-12-18 23:31:38,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 23:31:38,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-18 23:31:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 23:31:38,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-18 23:31:38,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=767, Invalid=6543, Unknown=0, NotChecked=0, Total=7310 [2023-12-18 23:31:38,154 INFO L87 Difference]: Start difference. First operand 60908 states and 74757 transitions. Second operand has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:35:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 23:35:56,698 INFO L93 Difference]: Finished difference Result 153093 states and 186119 transitions. [2023-12-18 23:35:56,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 434 states. [2023-12-18 23:35:56,699 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-18 23:35:56,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 23:35:56,839 INFO L225 Difference]: With dead ends: 153093 [2023-12-18 23:35:56,839 INFO L226 Difference]: Without dead ends: 129230 [2023-12-18 23:35:56,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109975 ImplicationChecksByTransitivity, 235.0s TimeCoverageRelationStatistics Valid=34942, Invalid=226690, Unknown=0, NotChecked=0, Total=261632 [2023-12-18 23:35:56,879 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 35253 mSDsluCounter, 31788 mSDsCounter, 0 mSdLazyCounter, 6311 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35253 SdHoareTripleChecker+Valid, 33398 SdHoareTripleChecker+Invalid, 6727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 6311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-18 23:35:56,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35253 Valid, 33398 Invalid, 6727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [416 Valid, 6311 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-18 23:35:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129230 states. [2023-12-18 23:36:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129230 to 63266. [2023-12-18 23:36:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63266 states, 63264 states have (on average 1.225673368740516) internal successors, (77541), 63265 states have internal predecessors, (77541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63266 states to 63266 states and 77541 transitions. [2023-12-18 23:36:08,925 INFO L78 Accepts]: Start accepts. Automaton has 63266 states and 77541 transitions. Word has length 102 [2023-12-18 23:36:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 23:36:08,925 INFO L495 AbstractCegarLoop]: Abstraction has 63266 states and 77541 transitions. [2023-12-18 23:36:08,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.302325581395349) internal successors, (284), 86 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 23:36:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 63266 states and 77541 transitions. [2023-12-18 23:36:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-18 23:36:08,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 23:36:08,926 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-18 23:36:08,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-18 23:36:09,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:36:09,131 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 23:36:09,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 23:36:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash -672894818, now seen corresponding path program 1 times [2023-12-18 23:36:09,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 23:36:09,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025158949] [2023-12-18 23:36:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:36:09,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 23:36:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:36:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 23:36:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 23:36:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025158949] [2023-12-18 23:36:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025158949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 23:36:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839233554] [2023-12-18 23:36:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 23:36:09,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:36:09,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 23:36:09,987 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 23:36:09,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-18 23:36:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 23:36:10,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-18 23:36:10,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-18 23:36:11,142 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 23:36:11,153 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-18 23:36:11,159 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 [2023-12-18 23:36:11,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-18 23:36:11,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 23:36:11,359 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 103 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-10-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-10-1 context. [2023-12-18 23:36:11,361 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-18 23:36:11,363 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-18 23:36:11,365 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 23:36:11,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:36:11 BoogieIcfgContainer [2023-12-18 23:36:11,367 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 23:36:11,367 INFO L158 Benchmark]: Toolchain (without parser) took 838099.64ms. Allocated memory was 262.1MB in the beginning and 3.7GB in the end (delta: 3.4GB). Free memory was 201.3MB in the beginning and 569.7MB in the end (delta: -368.4MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-18 23:36:11,367 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 191.9MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 23:36:11,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1232.81ms. Allocated memory is still 262.1MB. Free memory was 201.1MB in the beginning and 180.8MB in the end (delta: 20.3MB). Peak memory consumption was 94.2MB. Max. memory is 8.0GB. [2023-12-18 23:36:11,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 216.56ms. Allocated memory is still 262.1MB. Free memory was 180.3MB in the beginning and 106.9MB in the end (delta: 73.4MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. [2023-12-18 23:36:11,368 INFO L158 Benchmark]: Boogie Preprocessor took 465.21ms. Allocated memory was 262.1MB in the beginning and 408.9MB in the end (delta: 146.8MB). Free memory was 106.9MB in the beginning and 261.4MB in the end (delta: -154.5MB). Peak memory consumption was 60.5MB. Max. memory is 8.0GB. [2023-12-18 23:36:11,368 INFO L158 Benchmark]: RCFGBuilder took 2961.31ms. Allocated memory was 408.9MB in the beginning and 817.9MB in the end (delta: 408.9MB). Free memory was 261.4MB in the beginning and 458.7MB in the end (delta: -197.3MB). Peak memory consumption was 214.4MB. Max. memory is 8.0GB. [2023-12-18 23:36:11,368 INFO L158 Benchmark]: TraceAbstraction took 833218.30ms. Allocated memory was 817.9MB in the beginning and 3.7GB in the end (delta: 2.9GB). Free memory was 458.2MB in the beginning and 569.7MB in the end (delta: -111.5MB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-12-18 23:36:11,369 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 191.9MB. Free memory is still 144.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1232.81ms. Allocated memory is still 262.1MB. Free memory was 201.1MB in the beginning and 180.8MB in the end (delta: 20.3MB). Peak memory consumption was 94.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 216.56ms. Allocated memory is still 262.1MB. Free memory was 180.3MB in the beginning and 106.9MB in the end (delta: 73.4MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 465.21ms. Allocated memory was 262.1MB in the beginning and 408.9MB in the end (delta: 146.8MB). Free memory was 106.9MB in the beginning and 261.4MB in the end (delta: -154.5MB). Peak memory consumption was 60.5MB. Max. memory is 8.0GB. * RCFGBuilder took 2961.31ms. Allocated memory was 408.9MB in the beginning and 817.9MB in the end (delta: 408.9MB). Free memory was 261.4MB in the beginning and 458.7MB in the end (delta: -197.3MB). Peak memory consumption was 214.4MB. Max. memory is 8.0GB. * TraceAbstraction took 833218.30ms. Allocated memory was 817.9MB in the beginning and 3.7GB in the end (delta: 2.9GB). Free memory was 458.2MB in the beginning and 569.7MB in the end (delta: -111.5MB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 295]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 295). Cancelled while NwaCegarLoop was analyzing trace of length 103 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-10-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-10-1 context. - TimeoutResultAtElement [Line: 493]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 493). Cancelled while NwaCegarLoop was analyzing trace of length 103 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-10-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-10-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 833.2s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 687.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 422078 SdHoareTripleChecker+Valid, 38.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 422078 mSDsluCounter, 478117 SdHoareTripleChecker+Invalid, 34.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 427093 mSDsCounter, 4144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50379 IncrementalHoareTripleChecker+Invalid, 54523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4144 mSolverCounterUnsat, 51024 mSDtfsCounter, 50379 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6256 GetRequests, 2604 SyntacticMatches, 10 SemanticMatches, 3642 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 453953 ImplicationChecksByTransitivity, 586.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63266occurred in iteration=34, InterpolantAutomatonStates: 2942, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 56.3s AutomataMinimizationTime, 34 MinimizatonAttempts, 251840 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 80.6s InterpolantComputationTime, 3741 NumberOfCodeBlocks, 3741 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 5216 ConstructedInterpolants, 0 QuantifiedInterpolants, 129344 SizeOfPredicates, 165 NumberOfNonLiveVariables, 6793 ConjunctsInSsa, 534 ConjunctsInUnsatCore, 70 InterpolantComputations, 16 PerfectInterpolantSequences, 1206/3417 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown