/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/eca-rers2012/Problem13_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:53:54,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:53:54,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:53:54,362 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:53:54,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:53:54,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:53:54,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:53:54,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:53:54,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:53:54,388 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:53:54,388 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:53:54,388 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:53:54,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:53:54,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:53:54,389 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:53:54,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:53:54,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:53:54,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:53:54,390 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:53:54,390 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:53:54,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:53:54,391 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:53:54,391 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:53:54,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:53:54,392 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:53:54,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:53:54,392 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:53:54,392 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:53:54,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:53:54,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:53:54,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:53:54,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:53:54,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:53:54,394 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:53:54,395 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:53:54,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:53:54,395 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:53:54,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:53:54,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:53:54,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:53:54,599 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:53:54,600 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:53:54,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15.c [2023-12-15 18:53:55,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:53:55,925 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:53:55,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15.c [2023-12-15 18:53:55,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92436251e/d78177c811cf4f3382c7fe067ecaa002/FLAG81b3e38c0 [2023-12-15 18:53:55,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92436251e/d78177c811cf4f3382c7fe067ecaa002 [2023-12-15 18:53:55,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:53:55,967 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:53:55,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:53:55,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:53:55,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:53:55,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:53:55" (1/1) ... [2023-12-15 18:53:55,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102b3612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:55, skipping insertion in model container [2023-12-15 18:53:55,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:53:55" (1/1) ... [2023-12-15 18:53:56,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:53:56,291 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15.c[5297,5310] [2023-12-15 18:53:56,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:53:56,932 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:53:56,951 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15.c[5297,5310] [2023-12-15 18:53:57,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:53:57,318 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:53:57,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57 WrapperNode [2023-12-15 18:53:57,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:53:57,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:53:57,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:53:57,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:53:57,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:57,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:57,772 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:53:57,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:53:57,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:53:57,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:53:57,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:53:57,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:57,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:57,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:57,999 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:53:58,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:58,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:58,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:58,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:58,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:58,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:58,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:53:58,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:53:58,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:53:58,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:53:58,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (1/1) ... [2023-12-15 18:53:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:53:58,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:53:58,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 18:53:58,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 18:53:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:53:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:53:58,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:53:58,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:53:58,373 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:53:58,375 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:54:02,126 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:54:02,164 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:54:02,165 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:54:02,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:54:02 BoogieIcfgContainer [2023-12-15 18:54:02,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:54:02,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:54:02,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:54:02,168 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:54:02,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:53:55" (1/3) ... [2023-12-15 18:54:02,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f40f972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:54:02, skipping insertion in model container [2023-12-15 18:54:02,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:57" (2/3) ... [2023-12-15 18:54:02,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f40f972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:54:02, skipping insertion in model container [2023-12-15 18:54:02,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:54:02" (3/3) ... [2023-12-15 18:54:02,170 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15.c [2023-12-15 18:54:02,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:54:02,181 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:54:02,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:54:02,226 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;@71186dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:54:02,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:54:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-15 18:54:02,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:02,236 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] [2023-12-15 18:54:02,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:02,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:02,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1529089843, now seen corresponding path program 1 times [2023-12-15 18:54:02,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:02,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820176307] [2023-12-15 18:54:02,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:02,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820176307] [2023-12-15 18:54:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820176307] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:02,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:02,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821685266] [2023-12-15 18:54:02,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:54:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:54:02,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:54:02,376 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 17.5) internal successors, (35), 2 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) [2023-12-15 18:54:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:02,433 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-15 18:54:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:54:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 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 [2023-12-15 18:54:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:02,448 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 18:54:02,448 INFO L226 Difference]: Without dead ends: 1034 [2023-12-15 18:54:02,455 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 [2023-12-15 18:54:02,457 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:02,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:54:02,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-15 18:54:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-15 18:54:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-15 18:54:02,515 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 35 [2023-12-15 18:54:02,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:02,515 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-15 18:54:02,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 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) [2023-12-15 18:54:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-15 18:54:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-15 18:54:02,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:02,516 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] [2023-12-15 18:54:02,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:54:02,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:02,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 618286059, now seen corresponding path program 1 times [2023-12-15 18:54:02,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:02,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55907696] [2023-12-15 18:54:02,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:02,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:02,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:02,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55907696] [2023-12-15 18:54:02,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55907696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:02,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:02,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:02,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125788097] [2023-12-15 18:54:02,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:02,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:02,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:02,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:02,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:02,610 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 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) [2023-12-15 18:54:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:06,451 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-12-15 18:54:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 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 [2023-12-15 18:54:06,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:06,466 INFO L225 Difference]: With dead ends: 3015 [2023-12-15 18:54:06,466 INFO L226 Difference]: Without dead ends: 1982 [2023-12-15 18:54:06,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:06,468 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1019 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:06,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-15 18:54:06,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-15 18:54:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-12-15 18:54:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-12-15 18:54:06,512 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 35 [2023-12-15 18:54:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:06,513 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-12-15 18:54:06,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 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) [2023-12-15 18:54:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-12-15 18:54:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-15 18:54:06,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:06,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:06,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:54:06,518 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:06,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash -219422559, now seen corresponding path program 1 times [2023-12-15 18:54:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:06,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714898239] [2023-12-15 18:54:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:06,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714898239] [2023-12-15 18:54:06,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714898239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:06,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:06,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:06,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429008777] [2023-12-15 18:54:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:06,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:06,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:06,702 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:09,673 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-12-15 18:54:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:09,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-15 18:54:09,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:09,684 INFO L225 Difference]: With dead ends: 5455 [2023-12-15 18:54:09,684 INFO L226 Difference]: Without dead ends: 3527 [2023-12-15 18:54:09,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:09,687 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:09,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:54:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-12-15 18:54:09,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-12-15 18:54:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-12-15 18:54:09,743 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 100 [2023-12-15 18:54:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:09,744 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-12-15 18:54:09,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-12-15 18:54:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-15 18:54:09,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:09,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:09,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:54:09,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:09,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1135333746, now seen corresponding path program 1 times [2023-12-15 18:54:09,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:09,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546945153] [2023-12-15 18:54:09,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:09,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:09,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:09,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546945153] [2023-12-15 18:54:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546945153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:09,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972016511] [2023-12-15 18:54:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:09,910 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:12,773 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2023-12-15 18:54:12,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:12,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-12-15 18:54:12,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:12,790 INFO L225 Difference]: With dead ends: 10231 [2023-12-15 18:54:12,791 INFO L226 Difference]: Without dead ends: 6707 [2023-12-15 18:54:12,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:12,796 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:12,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:54:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2023-12-15 18:54:12,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2023-12-15 18:54:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-12-15 18:54:12,883 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 106 [2023-12-15 18:54:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:12,883 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-12-15 18:54:12,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-12-15 18:54:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-15 18:54:12,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:12,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:12,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:54:12,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:12,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash -73128569, now seen corresponding path program 1 times [2023-12-15 18:54:12,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332811668] [2023-12-15 18:54:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:13,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:13,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332811668] [2023-12-15 18:54:13,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332811668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:13,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:13,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:13,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367759544] [2023-12-15 18:54:13,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:13,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:13,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:13,008 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:16,200 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-12-15 18:54:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:16,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-15 18:54:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:16,224 INFO L225 Difference]: With dead ends: 17442 [2023-12-15 18:54:16,225 INFO L226 Difference]: Without dead ends: 10744 [2023-12-15 18:54:16,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:16,234 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:16,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:54:16,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-12-15 18:54:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-12-15 18:54:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-12-15 18:54:16,365 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 136 [2023-12-15 18:54:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:16,366 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-12-15 18:54:16,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-12-15 18:54:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-15 18:54:16,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:16,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:16,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:54:16,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:16,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash 249104654, now seen corresponding path program 1 times [2023-12-15 18:54:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:16,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694104216] [2023-12-15 18:54:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:16,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694104216] [2023-12-15 18:54:16,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694104216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:16,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043668901] [2023-12-15 18:54:16,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:16,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:16,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:16,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:16,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:16,628 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:19,014 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-12-15 18:54:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2023-12-15 18:54:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:19,036 INFO L225 Difference]: With dead ends: 20548 [2023-12-15 18:54:19,036 INFO L226 Difference]: Without dead ends: 10668 [2023-12-15 18:54:19,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:19,049 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:19,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:54:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-12-15 18:54:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-12-15 18:54:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-12-15 18:54:19,229 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 146 [2023-12-15 18:54:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:19,229 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-12-15 18:54:19,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-12-15 18:54:19,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-15 18:54:19,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:19,232 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:19,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:54:19,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:19,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:19,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1504628644, now seen corresponding path program 1 times [2023-12-15 18:54:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729232221] [2023-12-15 18:54:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:19,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:19,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729232221] [2023-12-15 18:54:19,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729232221] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:54:19,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847048195] [2023-12-15 18:54:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:19,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:19,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:54:19,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 18:54:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:19,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:54:19,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:54:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-15 18:54:19,929 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:54:19,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847048195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:19,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:54:19,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-15 18:54:19,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068046344] [2023-12-15 18:54:19,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:19,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:19,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:54:19,931 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:22,890 INFO L93 Difference]: Finished difference Result 30030 states and 41216 transitions. [2023-12-15 18:54:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:22,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 160 [2023-12-15 18:54:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:22,923 INFO L225 Difference]: With dead ends: 30030 [2023-12-15 18:54:22,923 INFO L226 Difference]: Without dead ends: 20150 [2023-12-15 18:54:22,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 18:54:22,935 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:22,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1219 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:54:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2023-12-15 18:54:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 19336. [2023-12-15 18:54:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19336 states, 19335 states have (on average 1.2424618567364882) internal successors, (24023), 19335 states have internal predecessors, (24023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19336 states to 19336 states and 24023 transitions. [2023-12-15 18:54:23,223 INFO L78 Accepts]: Start accepts. Automaton has 19336 states and 24023 transitions. Word has length 160 [2023-12-15 18:54:23,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:23,224 INFO L495 AbstractCegarLoop]: Abstraction has 19336 states and 24023 transitions. [2023-12-15 18:54:23,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 19336 states and 24023 transitions. [2023-12-15 18:54:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-15 18:54:23,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:23,226 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:54:23,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 18:54:23,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:23,432 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:23,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1810403888, now seen corresponding path program 1 times [2023-12-15 18:54:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:23,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886604000] [2023-12-15 18:54:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:23,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-15 18:54:23,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:23,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886604000] [2023-12-15 18:54:23,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886604000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:23,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:23,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:23,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690220275] [2023-12-15 18:54:23,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:23,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:23,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:23,665 INFO L87 Difference]: Start difference. First operand 19336 states and 24023 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:26,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:26,474 INFO L93 Difference]: Finished difference Result 44988 states and 55627 transitions. [2023-12-15 18:54:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:26,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 247 [2023-12-15 18:54:26,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:26,529 INFO L225 Difference]: With dead ends: 44988 [2023-12-15 18:54:26,529 INFO L226 Difference]: Without dead ends: 26440 [2023-12-15 18:54:26,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:26,547 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:26,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:54:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26440 states. [2023-12-15 18:54:26,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26440 to 26433. [2023-12-15 18:54:26,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 26432 states have (on average 1.2005901937046004) internal successors, (31734), 26432 states have internal predecessors, (31734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 31734 transitions. [2023-12-15 18:54:26,793 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 31734 transitions. Word has length 247 [2023-12-15 18:54:26,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:26,793 INFO L495 AbstractCegarLoop]: Abstraction has 26433 states and 31734 transitions. [2023-12-15 18:54:26,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 31734 transitions. [2023-12-15 18:54:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-15 18:54:26,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:26,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-15 18:54:26,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:54:26,797 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:26,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1157637044, now seen corresponding path program 1 times [2023-12-15 18:54:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:26,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109295376] [2023-12-15 18:54:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:26,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:26,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:26,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109295376] [2023-12-15 18:54:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109295376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:26,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046548363] [2023-12-15 18:54:26,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:26,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:26,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:26,898 INFO L87 Difference]: Start difference. First operand 26433 states and 31734 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:30,014 INFO L93 Difference]: Finished difference Result 72534 states and 87970 transitions. [2023-12-15 18:54:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:30,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2023-12-15 18:54:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:30,078 INFO L225 Difference]: With dead ends: 72534 [2023-12-15 18:54:30,078 INFO L226 Difference]: Without dead ends: 46102 [2023-12-15 18:54:30,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:30,107 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 841 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:30,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1981 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:54:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46102 states. [2023-12-15 18:54:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46102 to 43732. [2023-12-15 18:54:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43732 states, 43731 states have (on average 1.1691248770894789) internal successors, (51127), 43731 states have internal predecessors, (51127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43732 states to 43732 states and 51127 transitions. [2023-12-15 18:54:30,512 INFO L78 Accepts]: Start accepts. Automaton has 43732 states and 51127 transitions. Word has length 249 [2023-12-15 18:54:30,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:30,513 INFO L495 AbstractCegarLoop]: Abstraction has 43732 states and 51127 transitions. [2023-12-15 18:54:30,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:30,513 INFO L276 IsEmpty]: Start isEmpty. Operand 43732 states and 51127 transitions. [2023-12-15 18:54:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-15 18:54:30,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:30,515 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:54:30,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:30,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2082244430, now seen corresponding path program 1 times [2023-12-15 18:54:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:30,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345221139] [2023-12-15 18:54:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:30,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:30,634 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:30,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345221139] [2023-12-15 18:54:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345221139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:30,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:30,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527328324] [2023-12-15 18:54:30,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:30,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:30,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:30,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:30,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:30,636 INFO L87 Difference]: Start difference. First operand 43732 states and 51127 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 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) [2023-12-15 18:54:33,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:33,997 INFO L93 Difference]: Finished difference Result 106363 states and 126457 transitions. [2023-12-15 18:54:33,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:33,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 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 262 [2023-12-15 18:54:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:34,081 INFO L225 Difference]: With dead ends: 106363 [2023-12-15 18:54:34,082 INFO L226 Difference]: Without dead ends: 63419 [2023-12-15 18:54:34,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:34,116 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 822 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:34,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 928 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-15 18:54:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63419 states. [2023-12-15 18:54:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63419 to 61047. [2023-12-15 18:54:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61047 states, 61046 states have (on average 1.1609605870982538) internal successors, (70872), 61046 states have internal predecessors, (70872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61047 states to 61047 states and 70872 transitions. [2023-12-15 18:54:34,894 INFO L78 Accepts]: Start accepts. Automaton has 61047 states and 70872 transitions. Word has length 262 [2023-12-15 18:54:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:34,894 INFO L495 AbstractCegarLoop]: Abstraction has 61047 states and 70872 transitions. [2023-12-15 18:54:34,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 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) [2023-12-15 18:54:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 61047 states and 70872 transitions. [2023-12-15 18:54:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-15 18:54:34,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:34,900 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:34,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:54:34,900 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:34,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1550948187, now seen corresponding path program 1 times [2023-12-15 18:54:34,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:34,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883757397] [2023-12-15 18:54:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:35,125 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:54:35,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:35,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883757397] [2023-12-15 18:54:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883757397] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:35,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:35,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:35,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990038675] [2023-12-15 18:54:35,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:35,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:54:35,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:54:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:54:35,128 INFO L87 Difference]: Start difference. First operand 61047 states and 70872 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:41,265 INFO L93 Difference]: Finished difference Result 160081 states and 186749 transitions. [2023-12-15 18:54:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:54:41,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 323 [2023-12-15 18:54:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:41,373 INFO L225 Difference]: With dead ends: 160081 [2023-12-15 18:54:41,374 INFO L226 Difference]: Without dead ends: 99822 [2023-12-15 18:54:41,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:54:41,400 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1689 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7043 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 7982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 7043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:41,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 1110 Invalid, 7982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 7043 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-15 18:54:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99822 states. [2023-12-15 18:54:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99822 to 76802. [2023-12-15 18:54:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76802 states, 76801 states have (on average 1.1463783023658547) internal successors, (88043), 76801 states have internal predecessors, (88043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76802 states to 76802 states and 88043 transitions. [2023-12-15 18:54:42,292 INFO L78 Accepts]: Start accepts. Automaton has 76802 states and 88043 transitions. Word has length 323 [2023-12-15 18:54:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:42,292 INFO L495 AbstractCegarLoop]: Abstraction has 76802 states and 88043 transitions. [2023-12-15 18:54:42,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 76802 states and 88043 transitions. [2023-12-15 18:54:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-12-15 18:54:42,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:42,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:42,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:54:42,302 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:42,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1538923492, now seen corresponding path program 1 times [2023-12-15 18:54:42,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:42,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385132561] [2023-12-15 18:54:42,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 196 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:54:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385132561] [2023-12-15 18:54:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385132561] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:54:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517820935] [2023-12-15 18:54:43,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:43,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:43,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:43,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:54:43,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 18:54:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:43,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:54:43,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:54:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-15 18:54:43,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:54:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517820935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:43,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:54:43,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:54:43,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438935518] [2023-12-15 18:54:43,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:43,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:43,583 INFO L87 Difference]: Start difference. First operand 76802 states and 88043 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:46,388 INFO L93 Difference]: Finished difference Result 152805 states and 175283 transitions. [2023-12-15 18:54:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:46,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 341 [2023-12-15 18:54:46,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:46,467 INFO L225 Difference]: With dead ends: 152805 [2023-12-15 18:54:46,467 INFO L226 Difference]: Without dead ends: 76791 [2023-12-15 18:54:46,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:46,503 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 1072 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:46,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 812 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:54:46,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2023-12-15 18:54:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76788. [2023-12-15 18:54:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76788 states, 76787 states have (on average 1.1087163191686094) internal successors, (85135), 76787 states have internal predecessors, (85135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:47,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76788 states to 76788 states and 85135 transitions. [2023-12-15 18:54:47,301 INFO L78 Accepts]: Start accepts. Automaton has 76788 states and 85135 transitions. Word has length 341 [2023-12-15 18:54:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:47,302 INFO L495 AbstractCegarLoop]: Abstraction has 76788 states and 85135 transitions. [2023-12-15 18:54:47,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:47,302 INFO L276 IsEmpty]: Start isEmpty. Operand 76788 states and 85135 transitions. [2023-12-15 18:54:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-15 18:54:47,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:47,307 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:47,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 18:54:47,514 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,SelfDestructingSolverStorable11 [2023-12-15 18:54:47,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:47,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1006701512, now seen corresponding path program 1 times [2023-12-15 18:54:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610506460] [2023-12-15 18:54:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 290 proven. 113 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-15 18:54:48,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610506460] [2023-12-15 18:54:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610506460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:54:48,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819065433] [2023-12-15 18:54:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:48,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:48,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:48,610 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 18:54:48,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 18:54:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:48,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:54:48,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:54:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-15 18:54:48,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:54:48,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819065433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:48,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:54:48,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:54:48,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075569271] [2023-12-15 18:54:48,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:48,879 INFO L87 Difference]: Start difference. First operand 76788 states and 85135 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:51,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:51,648 INFO L93 Difference]: Finished difference Result 152786 states and 169476 transitions. [2023-12-15 18:54:51,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:51,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 390 [2023-12-15 18:54:51,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:51,721 INFO L225 Difference]: With dead ends: 152786 [2023-12-15 18:54:51,721 INFO L226 Difference]: Without dead ends: 76786 [2023-12-15 18:54:51,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:51,760 INFO L413 NwaCegarLoop]: 1341 mSDtfsCounter, 1084 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:51,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1419 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 18:54:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76786 states. [2023-12-15 18:54:52,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76786 to 76785. [2023-12-15 18:54:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76785 states, 76784 states have (on average 1.0866196082517192) internal successors, (83435), 76784 states have internal predecessors, (83435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76785 states to 76785 states and 83435 transitions. [2023-12-15 18:54:52,597 INFO L78 Accepts]: Start accepts. Automaton has 76785 states and 83435 transitions. Word has length 390 [2023-12-15 18:54:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:52,597 INFO L495 AbstractCegarLoop]: Abstraction has 76785 states and 83435 transitions. [2023-12-15 18:54:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:52,598 INFO L276 IsEmpty]: Start isEmpty. Operand 76785 states and 83435 transitions. [2023-12-15 18:54:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2023-12-15 18:54:52,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:52,602 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:52,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 18:54:52,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:52,806 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:52,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1525120624, now seen corresponding path program 1 times [2023-12-15 18:54:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688040074] [2023-12-15 18:54:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 464 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-15 18:54:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688040074] [2023-12-15 18:54:53,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688040074] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:53,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:53,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:53,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181507184] [2023-12-15 18:54:53,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:53,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:53,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:53,124 INFO L87 Difference]: Start difference. First operand 76785 states and 83435 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 18:54:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:55,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:55,691 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 838 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2053 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 2755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 2053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:55,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 678 Invalid, 2755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 2053 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 18:54:55,692 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:54:55,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:54:55,693 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (76785states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (91657 states constructed, input type IntersectNwa). [2023-12-15 18:54:55,696 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:55,699 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:54:55,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:54:55 BoogieIcfgContainer [2023-12-15 18:54:55,700 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:54:55,700 INFO L158 Benchmark]: Toolchain (without parser) took 59733.43ms. Allocated memory was 288.4MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 230.9MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-15 18:54:55,701 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 185.6MB. Free memory is still 139.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:54:55,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1349.53ms. Allocated memory is still 288.4MB. Free memory was 230.9MB in the beginning and 160.6MB in the end (delta: 70.3MB). Peak memory consumption was 91.9MB. Max. memory is 8.0GB. [2023-12-15 18:54:55,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 452.67ms. Allocated memory was 288.4MB in the beginning and 459.3MB in the end (delta: 170.9MB). Free memory was 160.1MB in the beginning and 326.3MB in the end (delta: -166.2MB). Peak memory consumption was 117.8MB. Max. memory is 8.0GB. [2023-12-15 18:54:55,701 INFO L158 Benchmark]: Boogie Preprocessor took 499.46ms. Allocated memory is still 459.3MB. Free memory was 326.3MB in the beginning and 282.4MB in the end (delta: 43.9MB). Peak memory consumption was 119.6MB. Max. memory is 8.0GB. [2023-12-15 18:54:55,701 INFO L158 Benchmark]: RCFGBuilder took 3885.53ms. Allocated memory was 459.3MB in the beginning and 785.4MB in the end (delta: 326.1MB). Free memory was 282.4MB in the beginning and 322.7MB in the end (delta: -40.4MB). Peak memory consumption was 368.0MB. Max. memory is 8.0GB. [2023-12-15 18:54:55,702 INFO L158 Benchmark]: TraceAbstraction took 53533.61ms. Allocated memory was 785.4MB in the beginning and 3.5GB in the end (delta: 2.7GB). Free memory was 321.7MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-15 18:54:55,703 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 185.6MB. Free memory is still 139.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1349.53ms. Allocated memory is still 288.4MB. Free memory was 230.9MB in the beginning and 160.6MB in the end (delta: 70.3MB). Peak memory consumption was 91.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 452.67ms. Allocated memory was 288.4MB in the beginning and 459.3MB in the end (delta: 170.9MB). Free memory was 160.1MB in the beginning and 326.3MB in the end (delta: -166.2MB). Peak memory consumption was 117.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 499.46ms. Allocated memory is still 459.3MB. Free memory was 326.3MB in the beginning and 282.4MB in the end (delta: 43.9MB). Peak memory consumption was 119.6MB. Max. memory is 8.0GB. * RCFGBuilder took 3885.53ms. Allocated memory was 459.3MB in the beginning and 785.4MB in the end (delta: 326.1MB). Free memory was 282.4MB in the beginning and 322.7MB in the end (delta: -40.4MB). Peak memory consumption was 368.0MB. Max. memory is 8.0GB. * TraceAbstraction took 53533.61ms. Allocated memory was 785.4MB in the beginning and 3.5GB in the end (delta: 2.7GB). Free memory was 321.7MB in the beginning and 2.0GB in the end (delta: -1.6GB). Peak memory consumption was 1.1GB. 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: 130]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 130). Cancelled while NwaCegarLoop was constructing difference of abstraction (76785states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (91657 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.5s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 42.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12246 SdHoareTripleChecker+Valid, 39.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12246 mSDsluCounter, 15577 SdHoareTripleChecker+Invalid, 32.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1760 mSDsCounter, 8339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37673 IncrementalHoareTripleChecker+Invalid, 46012 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8339 mSolverCounterUnsat, 13817 mSDtfsCounter, 37673 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 933 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76802occurred in iteration=11, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 28726 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 3812 NumberOfCodeBlocks, 3812 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 3795 ConstructedInterpolants, 0 QuantifiedInterpolants, 17544 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1245 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 2980/3239 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