/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 16:57:22,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 16:57:22,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 16:57:22,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 16:57:22,143 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 16:57:22,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 16:57:22,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 16:57:22,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 16:57:22,174 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 16:57:22,177 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 16:57:22,177 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 16:57:22,177 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 16:57:22,178 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 16:57:22,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 16:57:22,179 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 16:57:22,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 16:57:22,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 16:57:22,179 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 16:57:22,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 16:57:22,180 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 16:57:22,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 16:57:22,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 16:57:22,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 16:57:22,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 16:57:22,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 16:57:22,181 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 16:57:22,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 16:57:22,181 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 16:57:22,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 16:57:22,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 16:57:22,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 16:57:22,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 16:57:22,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:57:22,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 16:57:22,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 16:57:22,183 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 16:57:22,183 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 16:57:22,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 16:57:22,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 16:57:22,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 16:57:22,184 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 16:57:22,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 16:57:22,185 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 16:57:22,185 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 16:57:22,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 16:57:22,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 16:57:22,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 16:57:22,426 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 16:57:22,427 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 16:57:22,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02.c [2023-12-20 16:57:23,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 16:57:23,824 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 16:57:23,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02.c [2023-12-20 16:57:23,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe81ab178/d97542eea9e84afa9189bc846c195726/FLAGccb384446 [2023-12-20 16:57:23,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe81ab178/d97542eea9e84afa9189bc846c195726 [2023-12-20 16:57:23,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 16:57:23,869 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 16:57:23,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 16:57:23,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 16:57:23,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 16:57:23,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:57:23" (1/1) ... [2023-12-20 16:57:23,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749f526c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:23, skipping insertion in model container [2023-12-20 16:57:23,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:57:23" (1/1) ... [2023-12-20 16:57:23,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 16:57:24,191 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_label02.c[5671,5684] [2023-12-20 16:57:24,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:57:24,839 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 16:57:24,858 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_label02.c[5671,5684] [2023-12-20 16:57:25,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 16:57:25,379 INFO L206 MainTranslator]: Completed translation [2023-12-20 16:57:25,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25 WrapperNode [2023-12-20 16:57:25,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 16:57:25,382 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 16:57:25,382 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 16:57:25,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 16:57:25,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:25,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:25,833 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 16:57:25,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 16:57:25,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 16:57:25,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 16:57:25,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 16:57:25,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:25,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,157 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]. [2023-12-20 16:57:26,157 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 16:57:26,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 16:57:26,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 16:57:26,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 16:57:26,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (1/1) ... [2023-12-20 16:57:26,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 16:57:26,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:57:26,493 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) [2023-12-20 16:57:26,500 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 [2023-12-20 16:57:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 16:57:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 16:57:26,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 16:57:26,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 16:57:26,565 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 16:57:26,567 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 16:57:30,212 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 16:57:30,270 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 16:57:30,270 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 16:57:30,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:57:30 BoogieIcfgContainer [2023-12-20 16:57:30,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 16:57:30,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 16:57:30,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 16:57:30,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 16:57:30,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 04:57:23" (1/3) ... [2023-12-20 16:57:30,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b837a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:57:30, skipping insertion in model container [2023-12-20 16:57:30,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:57:25" (2/3) ... [2023-12-20 16:57:30,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b837a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:57:30, skipping insertion in model container [2023-12-20 16:57:30,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:57:30" (3/3) ... [2023-12-20 16:57:30,277 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label02.c [2023-12-20 16:57:30,289 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 16:57:30,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 16:57:30,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 16:57:30,342 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;@1f14a59b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 16:57:30,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 16:57:30,348 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) [2023-12-20 16:57:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 16:57:30,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:30,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:57:30,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:30,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:30,357 INFO L85 PathProgramCache]: Analyzing trace with hash -547071672, now seen corresponding path program 1 times [2023-12-20 16:57:30,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:30,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598586284] [2023-12-20 16:57:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:30,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:57:30,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:30,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598586284] [2023-12-20 16:57:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598586284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:30,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:57:30,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961914931] [2023-12-20 16:57:30,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 16:57:30,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 16:57:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 16:57:30,515 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:30,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:30,572 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 16:57:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 16:57:30,598 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 16:57:30,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:30,611 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 16:57:30,612 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 16:57:30,617 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 [2023-12-20 16:57:30,619 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 [2023-12-20 16:57:30,620 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] [2023-12-20 16:57:30,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 16:57:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 16:57:30,678 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) [2023-12-20 16:57:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 16:57:30,682 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 38 [2023-12-20 16:57:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:30,682 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 16:57:30,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:30,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 16:57:30,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 16:57:30,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:30,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:57:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 16:57:30,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:30,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1750479704, now seen corresponding path program 1 times [2023-12-20 16:57:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33278818] [2023-12-20 16:57:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:57:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33278818] [2023-12-20 16:57:30,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33278818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:30,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:30,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:57:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552317047] [2023-12-20 16:57:30,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:57:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:30,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:57:30,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:57:30,948 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:36,272 INFO L93 Difference]: Finished difference Result 3696 states and 6823 transitions. [2023-12-20 16:57:36,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:57:36,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-20 16:57:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:36,282 INFO L225 Difference]: With dead ends: 3696 [2023-12-20 16:57:36,282 INFO L226 Difference]: Without dead ends: 2663 [2023-12-20 16:57:36,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 16:57:36,287 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 2684 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 1487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1487 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:57:36,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 1017 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1487 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-12-20 16:57:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2023-12-20 16:57:36,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2662. [2023-12-20 16:57:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2661 states have (on average 1.4611048478015785) internal successors, (3888), 2661 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:36,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 3888 transitions. [2023-12-20 16:57:36,351 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 3888 transitions. Word has length 38 [2023-12-20 16:57:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:36,351 INFO L495 AbstractCegarLoop]: Abstraction has 2662 states and 3888 transitions. [2023-12-20 16:57:36,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 3888 transitions. [2023-12-20 16:57:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-20 16:57:36,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:36,357 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, 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] [2023-12-20 16:57:36,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 16:57:36,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:36,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:36,358 INFO L85 PathProgramCache]: Analyzing trace with hash 398849616, now seen corresponding path program 1 times [2023-12-20 16:57:36,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:36,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548744750] [2023-12-20 16:57:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 16:57:36,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548744750] [2023-12-20 16:57:36,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548744750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:36,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:36,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:57:36,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693833406] [2023-12-20 16:57:36,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:36,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:57:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:36,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:57:36,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:57:36,616 INFO L87 Difference]: Start difference. First operand 2662 states and 3888 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:41,703 INFO L93 Difference]: Finished difference Result 7863 states and 12668 transitions. [2023-12-20 16:57:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:57:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2023-12-20 16:57:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:41,721 INFO L225 Difference]: With dead ends: 7863 [2023-12-20 16:57:41,722 INFO L226 Difference]: Without dead ends: 5989 [2023-12-20 16:57:41,727 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 [2023-12-20 16:57:41,730 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1717 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 6127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:57:41,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 1066 Invalid, 6127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 5284 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 16:57:41,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2023-12-20 16:57:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5858. [2023-12-20 16:57:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5857 states have (on average 1.4452791531500768) internal successors, (8465), 5857 states have internal predecessors, (8465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8465 transitions. [2023-12-20 16:57:41,812 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8465 transitions. Word has length 163 [2023-12-20 16:57:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:41,813 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8465 transitions. [2023-12-20 16:57:41,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8465 transitions. [2023-12-20 16:57:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-20 16:57:41,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:41,816 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:57:41,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 16:57:41,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:41,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:41,817 INFO L85 PathProgramCache]: Analyzing trace with hash -371485884, now seen corresponding path program 1 times [2023-12-20 16:57:41,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:41,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173012581] [2023-12-20 16:57:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:41,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 16:57:42,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:42,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173012581] [2023-12-20 16:57:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173012581] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:42,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:42,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:57:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221741408] [2023-12-20 16:57:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:42,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:57:42,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:42,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:57:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:57:42,038 INFO L87 Difference]: Start difference. First operand 5858 states and 8465 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) [2023-12-20 16:57:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:45,017 INFO L93 Difference]: Finished difference Result 15684 states and 23388 transitions. [2023-12-20 16:57:45,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:57:45,017 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 205 [2023-12-20 16:57:45,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:45,045 INFO L225 Difference]: With dead ends: 15684 [2023-12-20 16:57:45,045 INFO L226 Difference]: Without dead ends: 10614 [2023-12-20 16:57:45,057 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 [2023-12-20 16:57:45,064 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 918 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:57:45,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 914 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:57:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10614 states. [2023-12-20 16:57:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10614 to 10607. [2023-12-20 16:57:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10607 states, 10606 states have (on average 1.3551763152932303) internal successors, (14373), 10606 states have internal predecessors, (14373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10607 states to 10607 states and 14373 transitions. [2023-12-20 16:57:45,209 INFO L78 Accepts]: Start accepts. Automaton has 10607 states and 14373 transitions. Word has length 205 [2023-12-20 16:57:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:45,210 INFO L495 AbstractCegarLoop]: Abstraction has 10607 states and 14373 transitions. [2023-12-20 16:57:45,210 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) [2023-12-20 16:57:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 10607 states and 14373 transitions. [2023-12-20 16:57:45,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2023-12-20 16:57:45,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:45,212 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, 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] [2023-12-20 16:57:45,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 16:57:45,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:45,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash 701803943, now seen corresponding path program 1 times [2023-12-20 16:57:45,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:45,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11713809] [2023-12-20 16:57:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:45,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-20 16:57:45,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11713809] [2023-12-20 16:57:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11713809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:45,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:57:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948322672] [2023-12-20 16:57:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:57:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:57:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:57:45,375 INFO L87 Difference]: Start difference. First operand 10607 states and 14373 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) [2023-12-20 16:57:48,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:48,374 INFO L93 Difference]: Finished difference Result 28348 states and 39238 transitions. [2023-12-20 16:57:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:57:48,375 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 219 [2023-12-20 16:57:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:48,411 INFO L225 Difference]: With dead ends: 28348 [2023-12-20 16:57:48,411 INFO L226 Difference]: Without dead ends: 18529 [2023-12-20 16:57:48,420 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 [2023-12-20 16:57:48,420 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 907 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 3417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:57:48,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 612 Invalid, 3417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:57:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18529 states. [2023-12-20 16:57:48,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18529 to 18522. [2023-12-20 16:57:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18522 states, 18521 states have (on average 1.3250364451163543) internal successors, (24541), 18521 states have internal predecessors, (24541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18522 states to 18522 states and 24541 transitions. [2023-12-20 16:57:48,634 INFO L78 Accepts]: Start accepts. Automaton has 18522 states and 24541 transitions. Word has length 219 [2023-12-20 16:57:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:48,635 INFO L495 AbstractCegarLoop]: Abstraction has 18522 states and 24541 transitions. [2023-12-20 16:57:48,635 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) [2023-12-20 16:57:48,635 INFO L276 IsEmpty]: Start isEmpty. Operand 18522 states and 24541 transitions. [2023-12-20 16:57:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-20 16:57:48,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:48,638 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:57:48,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 16:57:48,638 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:48,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 673486266, now seen corresponding path program 1 times [2023-12-20 16:57:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063434372] [2023-12-20 16:57:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 16:57:48,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:48,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063434372] [2023-12-20 16:57:48,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063434372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:48,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:48,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:57:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863054289] [2023-12-20 16:57:48,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:48,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:57:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:57:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:57:48,810 INFO L87 Difference]: Start difference. First operand 18522 states and 24541 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:51,857 INFO L93 Difference]: Finished difference Result 51207 states and 68743 transitions. [2023-12-20 16:57:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:57:51,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 256 [2023-12-20 16:57:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:51,917 INFO L225 Difference]: With dead ends: 51207 [2023-12-20 16:57:51,918 INFO L226 Difference]: Without dead ends: 33473 [2023-12-20 16:57:51,939 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 [2023-12-20 16:57:51,940 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 860 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 16:57:51,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 984 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 16:57:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33473 states. [2023-12-20 16:57:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33473 to 31108. [2023-12-20 16:57:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31108 states, 31107 states have (on average 1.2544443372874272) internal successors, (39022), 31107 states have internal predecessors, (39022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31108 states to 31108 states and 39022 transitions. [2023-12-20 16:57:52,300 INFO L78 Accepts]: Start accepts. Automaton has 31108 states and 39022 transitions. Word has length 256 [2023-12-20 16:57:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:52,301 INFO L495 AbstractCegarLoop]: Abstraction has 31108 states and 39022 transitions. [2023-12-20 16:57:52,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 31108 states and 39022 transitions. [2023-12-20 16:57:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-20 16:57:52,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:52,304 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:57:52,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 16:57:52,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:52,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash -314779711, now seen corresponding path program 1 times [2023-12-20 16:57:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:52,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608449803] [2023-12-20 16:57:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:52,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 16:57:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:52,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608449803] [2023-12-20 16:57:52,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608449803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:52,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:52,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:57:52,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009905203] [2023-12-20 16:57:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:57:52,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:57:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:57:52,631 INFO L87 Difference]: Start difference. First operand 31108 states and 39022 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:57:55,622 INFO L93 Difference]: Finished difference Result 87411 states and 110600 transitions. [2023-12-20 16:57:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:57:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 278 [2023-12-20 16:57:55,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:57:55,693 INFO L225 Difference]: With dead ends: 87411 [2023-12-20 16:57:55,694 INFO L226 Difference]: Without dead ends: 57091 [2023-12-20 16:57:55,729 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 [2023-12-20 16:57:55,730 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 888 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:57:55,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 905 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:57:55,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57091 states. [2023-12-20 16:57:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57091 to 57081. [2023-12-20 16:57:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57081 states, 57080 states have (on average 1.1981955150665733) internal successors, (68393), 57080 states have internal predecessors, (68393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57081 states to 57081 states and 68393 transitions. [2023-12-20 16:57:56,316 INFO L78 Accepts]: Start accepts. Automaton has 57081 states and 68393 transitions. Word has length 278 [2023-12-20 16:57:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:57:56,316 INFO L495 AbstractCegarLoop]: Abstraction has 57081 states and 68393 transitions. [2023-12-20 16:57:56,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:57:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 57081 states and 68393 transitions. [2023-12-20 16:57:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2023-12-20 16:57:56,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:57:56,320 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, 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, 2, 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] [2023-12-20 16:57:56,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 16:57:56,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:57:56,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:57:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1011438725, now seen corresponding path program 1 times [2023-12-20 16:57:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:57:56,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130261471] [2023-12-20 16:57:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:57:56,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:57:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:57:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 16:57:56,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:57:56,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130261471] [2023-12-20 16:57:56,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130261471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:57:56,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:57:56,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:57:56,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953003205] [2023-12-20 16:57:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:57:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:57:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:57:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:57:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:57:56,807 INFO L87 Difference]: Start difference. First operand 57081 states and 68393 transitions. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:03,120 INFO L93 Difference]: Finished difference Result 154523 states and 187110 transitions. [2023-12-20 16:58:03,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:58:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 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 306 [2023-12-20 16:58:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:03,248 INFO L225 Difference]: With dead ends: 154523 [2023-12-20 16:58:03,249 INFO L226 Difference]: Without dead ends: 98230 [2023-12-20 16:58:03,272 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 [2023-12-20 16:58:03,274 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1734 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:03,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 740 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 6697 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-20 16:58:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98230 states. [2023-12-20 16:58:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98230 to 98100. [2023-12-20 16:58:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98100 states, 98099 states have (on average 1.1910620903373124) internal successors, (116842), 98099 states have internal predecessors, (116842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98100 states to 98100 states and 116842 transitions. [2023-12-20 16:58:04,467 INFO L78 Accepts]: Start accepts. Automaton has 98100 states and 116842 transitions. Word has length 306 [2023-12-20 16:58:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:04,467 INFO L495 AbstractCegarLoop]: Abstraction has 98100 states and 116842 transitions. [2023-12-20 16:58:04,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 98100 states and 116842 transitions. [2023-12-20 16:58:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2023-12-20 16:58:04,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:04,472 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, 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, 2, 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] [2023-12-20 16:58:04,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 16:58:04,472 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:04,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1800520665, now seen corresponding path program 1 times [2023-12-20 16:58:04,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:04,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345321620] [2023-12-20 16:58:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:04,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:04,821 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-20 16:58:04,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:04,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345321620] [2023-12-20 16:58:04,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345321620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:04,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:04,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 16:58:04,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494462369] [2023-12-20 16:58:04,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:04,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:04,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:04,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:04,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:04,823 INFO L87 Difference]: Start difference. First operand 98100 states and 116842 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:07,931 INFO L93 Difference]: Finished difference Result 182031 states and 218401 transitions. [2023-12-20 16:58:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:07,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 321 [2023-12-20 16:58:07,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:08,045 INFO L225 Difference]: With dead ends: 182031 [2023-12-20 16:58:08,045 INFO L226 Difference]: Without dead ends: 98110 [2023-12-20 16:58:08,087 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 [2023-12-20 16:58:08,091 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:08,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1199 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:58:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98110 states. [2023-12-20 16:58:08,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98110 to 98100. [2023-12-20 16:58:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98100 states, 98099 states have (on average 1.1901956187117095) internal successors, (116757), 98099 states have internal predecessors, (116757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98100 states to 98100 states and 116757 transitions. [2023-12-20 16:58:09,294 INFO L78 Accepts]: Start accepts. Automaton has 98100 states and 116757 transitions. Word has length 321 [2023-12-20 16:58:09,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:09,295 INFO L495 AbstractCegarLoop]: Abstraction has 98100 states and 116757 transitions. [2023-12-20 16:58:09,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand 98100 states and 116757 transitions. [2023-12-20 16:58:09,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-20 16:58:09,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:09,319 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:58:09,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 16:58:09,320 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:09,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1217763261, now seen corresponding path program 1 times [2023-12-20 16:58:09,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:09,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593865374] [2023-12-20 16:58:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 217 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 16:58:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593865374] [2023-12-20 16:58:10,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593865374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:58:10,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950642637] [2023-12-20 16:58:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:10,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:58:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:58:10,214 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) [2023-12-20 16:58:10,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 16:58:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:10,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 16:58:10,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:58:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 16:58:10,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:58:10,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950642637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:10,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:58:10,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-20 16:58:10,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569347712] [2023-12-20 16:58:10,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:10,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:10,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:10,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:10,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 16:58:10,496 INFO L87 Difference]: Start difference. First operand 98100 states and 116757 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:13,424 INFO L93 Difference]: Finished difference Result 194623 states and 231568 transitions. [2023-12-20 16:58:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:13,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 350 [2023-12-20 16:58:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:13,545 INFO L225 Difference]: With dead ends: 194623 [2023-12-20 16:58:13,545 INFO L226 Difference]: Without dead ends: 97311 [2023-12-20 16:58:13,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-20 16:58:13,683 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 1138 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:13,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1445 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:58:13,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97311 states. [2023-12-20 16:58:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97311 to 97310. [2023-12-20 16:58:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97310 states, 97309 states have (on average 1.1398945626817663) internal successors, (110922), 97309 states have internal predecessors, (110922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97310 states to 97310 states and 110922 transitions. [2023-12-20 16:58:14,848 INFO L78 Accepts]: Start accepts. Automaton has 97310 states and 110922 transitions. Word has length 350 [2023-12-20 16:58:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:14,848 INFO L495 AbstractCegarLoop]: Abstraction has 97310 states and 110922 transitions. [2023-12-20 16:58:14,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 97310 states and 110922 transitions. [2023-12-20 16:58:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-12-20 16:58:14,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:14,873 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, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:14,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 16:58:15,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 16:58:15,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:15,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1352296652, now seen corresponding path program 1 times [2023-12-20 16:58:15,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:15,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138089169] [2023-12-20 16:58:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-20 16:58:15,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:15,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138089169] [2023-12-20 16:58:15,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138089169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:15,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:15,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:15,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206128226] [2023-12-20 16:58:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:15,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:15,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:15,280 INFO L87 Difference]: Start difference. First operand 97310 states and 110922 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:18,588 INFO L93 Difference]: Finished difference Result 226912 states and 257589 transitions. [2023-12-20 16:58:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 367 [2023-12-20 16:58:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:18,760 INFO L225 Difference]: With dead ends: 226912 [2023-12-20 16:58:18,760 INFO L226 Difference]: Without dead ends: 130390 [2023-12-20 16:58:18,937 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 [2023-12-20 16:58:18,937 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1069 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:18,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1347 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 16:58:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130390 states. [2023-12-20 16:58:20,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130390 to 123276. [2023-12-20 16:58:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123276 states, 123275 states have (on average 1.1204948286351653) internal successors, (138129), 123275 states have internal predecessors, (138129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123276 states to 123276 states and 138129 transitions. [2023-12-20 16:58:20,455 INFO L78 Accepts]: Start accepts. Automaton has 123276 states and 138129 transitions. Word has length 367 [2023-12-20 16:58:20,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:20,456 INFO L495 AbstractCegarLoop]: Abstraction has 123276 states and 138129 transitions. [2023-12-20 16:58:20,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 123276 states and 138129 transitions. [2023-12-20 16:58:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-12-20 16:58:20,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:20,466 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:20,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 16:58:20,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:20,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:20,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1822740125, now seen corresponding path program 1 times [2023-12-20 16:58:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:20,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411994656] [2023-12-20 16:58:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 16:58:20,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:20,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411994656] [2023-12-20 16:58:20,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411994656] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:20,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:20,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:20,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010718112] [2023-12-20 16:58:20,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:20,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:20,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:20,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:20,866 INFO L87 Difference]: Start difference. First operand 123276 states and 138129 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:24,351 INFO L93 Difference]: Finished difference Result 274900 states and 310705 transitions. [2023-12-20 16:58:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 469 [2023-12-20 16:58:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:24,551 INFO L225 Difference]: With dead ends: 274900 [2023-12-20 16:58:24,551 INFO L226 Difference]: Without dead ends: 152412 [2023-12-20 16:58:24,727 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 [2023-12-20 16:58:24,727 INFO L413 NwaCegarLoop]: 1782 mSDtfsCounter, 739 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:24,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1935 Invalid, 3172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:58:24,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152412 states. [2023-12-20 16:58:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152412 to 152393. [2023-12-20 16:58:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152393 states, 152392 states have (on average 1.1043427476507952) internal successors, (168293), 152392 states have internal predecessors, (168293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152393 states to 152393 states and 168293 transitions. [2023-12-20 16:58:26,486 INFO L78 Accepts]: Start accepts. Automaton has 152393 states and 168293 transitions. Word has length 469 [2023-12-20 16:58:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:26,487 INFO L495 AbstractCegarLoop]: Abstraction has 152393 states and 168293 transitions. [2023-12-20 16:58:26,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 152393 states and 168293 transitions. [2023-12-20 16:58:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-12-20 16:58:26,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:26,711 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:26,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 16:58:26,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:26,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 919141885, now seen corresponding path program 1 times [2023-12-20 16:58:26,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:26,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644158823] [2023-12-20 16:58:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:26,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-20 16:58:26,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:26,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644158823] [2023-12-20 16:58:26,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644158823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:26,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:26,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719004629] [2023-12-20 16:58:26,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:26,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:26,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:26,937 INFO L87 Difference]: Start difference. First operand 152393 states and 168293 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:30,728 INFO L93 Difference]: Finished difference Result 333126 states and 370829 transitions. [2023-12-20 16:58:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:30,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 478 [2023-12-20 16:58:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:30,949 INFO L225 Difference]: With dead ends: 333126 [2023-12-20 16:58:30,949 INFO L226 Difference]: Without dead ends: 181521 [2023-12-20 16:58:30,985 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 [2023-12-20 16:58:30,986 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 923 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:30,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 780 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:58:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181521 states. [2023-12-20 16:58:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181521 to 181500. [2023-12-20 16:58:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181500 states, 181499 states have (on average 1.1067939768263186) internal successors, (200882), 181499 states have internal predecessors, (200882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181500 states to 181500 states and 200882 transitions. [2023-12-20 16:58:33,173 INFO L78 Accepts]: Start accepts. Automaton has 181500 states and 200882 transitions. Word has length 478 [2023-12-20 16:58:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:33,173 INFO L495 AbstractCegarLoop]: Abstraction has 181500 states and 200882 transitions. [2023-12-20 16:58:33,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 181500 states and 200882 transitions. [2023-12-20 16:58:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-20 16:58:33,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:33,186 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:33,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 16:58:33,186 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:33,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash 576795389, now seen corresponding path program 1 times [2023-12-20 16:58:33,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:33,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265380667] [2023-12-20 16:58:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:33,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:33,804 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 16:58:33,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:33,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265380667] [2023-12-20 16:58:33,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265380667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:33,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:33,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196607864] [2023-12-20 16:58:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:33,806 INFO L87 Difference]: Start difference. First operand 181500 states and 200882 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:37,427 INFO L93 Difference]: Finished difference Result 352726 states and 392351 transitions. [2023-12-20 16:58:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:37,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 495 [2023-12-20 16:58:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:37,700 INFO L225 Difference]: With dead ends: 352726 [2023-12-20 16:58:37,701 INFO L226 Difference]: Without dead ends: 192484 [2023-12-20 16:58:37,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:37,776 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1185 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:37,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 384 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 16:58:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192484 states. [2023-12-20 16:58:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192484 to 192484. [2023-12-20 16:58:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192484 states, 192483 states have (on average 1.0990788796932716) internal successors, (211554), 192483 states have internal predecessors, (211554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:40,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192484 states to 192484 states and 211554 transitions. [2023-12-20 16:58:40,304 INFO L78 Accepts]: Start accepts. Automaton has 192484 states and 211554 transitions. Word has length 495 [2023-12-20 16:58:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:40,304 INFO L495 AbstractCegarLoop]: Abstraction has 192484 states and 211554 transitions. [2023-12-20 16:58:40,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 192484 states and 211554 transitions. [2023-12-20 16:58:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2023-12-20 16:58:40,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:40,326 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 16:58:40,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:40,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1455905509, now seen corresponding path program 1 times [2023-12-20 16:58:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:40,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629980944] [2023-12-20 16:58:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:40,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:41,912 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-20 16:58:41,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629980944] [2023-12-20 16:58:41,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629980944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:58:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529503127] [2023-12-20 16:58:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:41,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:58:41,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:58:41,914 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) [2023-12-20 16:58:41,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 16:58:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:42,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 16:58:42,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:58:42,872 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-20 16:58:42,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:58:42,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529503127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:42,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:58:42,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 16:58:42,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307880425] [2023-12-20 16:58:42,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:58:42,874 INFO L87 Difference]: Start difference. First operand 192484 states and 211554 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:45,971 INFO L93 Difference]: Finished difference Result 370808 states and 408578 transitions. [2023-12-20 16:58:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:45,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 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 540 [2023-12-20 16:58:45,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:46,454 INFO L225 Difference]: With dead ends: 370808 [2023-12-20 16:58:46,454 INFO L226 Difference]: Without dead ends: 199582 [2023-12-20 16:58:46,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 16:58:46,535 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 547 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:46,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1131 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 16:58:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199582 states. [2023-12-20 16:58:48,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199582 to 199571. [2023-12-20 16:58:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199571 states, 199570 states have (on average 1.0951345392594076) internal successors, (218556), 199570 states have internal predecessors, (218556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199571 states to 199571 states and 218556 transitions. [2023-12-20 16:58:49,042 INFO L78 Accepts]: Start accepts. Automaton has 199571 states and 218556 transitions. Word has length 540 [2023-12-20 16:58:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:49,042 INFO L495 AbstractCegarLoop]: Abstraction has 199571 states and 218556 transitions. [2023-12-20 16:58:49,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 2 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 199571 states and 218556 transitions. [2023-12-20 16:58:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2023-12-20 16:58:49,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:49,064 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:49,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 16:58:49,264 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,SelfDestructingSolverStorable14 [2023-12-20 16:58:49,265 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:49,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash 977560818, now seen corresponding path program 1 times [2023-12-20 16:58:49,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:49,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403851588] [2023-12-20 16:58:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-12-20 16:58:49,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:49,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403851588] [2023-12-20 16:58:49,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403851588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:49,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:49,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:49,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914029536] [2023-12-20 16:58:49,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:49,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:49,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:49,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:49,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:49,564 INFO L87 Difference]: Start difference. First operand 199571 states and 218556 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:53,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:58:53,782 INFO L93 Difference]: Finished difference Result 433796 states and 477049 transitions. [2023-12-20 16:58:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:58:53,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 559 [2023-12-20 16:58:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:58:54,140 INFO L225 Difference]: With dead ends: 433796 [2023-12-20 16:58:54,140 INFO L226 Difference]: Without dead ends: 255483 [2023-12-20 16:58:54,216 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 [2023-12-20 16:58:54,217 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 944 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 16:58:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 677 Invalid, 3364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2848 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 16:58:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255483 states. [2023-12-20 16:58:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255483 to 221616. [2023-12-20 16:58:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221616 states, 221615 states have (on average 1.0895607246801886) internal successors, (241463), 221615 states have internal predecessors, (241463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221616 states to 221616 states and 241463 transitions. [2023-12-20 16:58:56,765 INFO L78 Accepts]: Start accepts. Automaton has 221616 states and 241463 transitions. Word has length 559 [2023-12-20 16:58:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:58:56,766 INFO L495 AbstractCegarLoop]: Abstraction has 221616 states and 241463 transitions. [2023-12-20 16:58:56,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:58:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 221616 states and 241463 transitions. [2023-12-20 16:58:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2023-12-20 16:58:56,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:58:56,782 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:58:56,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 16:58:56,782 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:58:56,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:58:56,782 INFO L85 PathProgramCache]: Analyzing trace with hash -533799342, now seen corresponding path program 1 times [2023-12-20 16:58:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:58:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65928089] [2023-12-20 16:58:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:58:56,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:58:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:58:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-12-20 16:58:57,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:58:57,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65928089] [2023-12-20 16:58:57,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65928089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:58:57,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:58:57,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:58:57,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399958229] [2023-12-20 16:58:57,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:58:57,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:58:57,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:58:57,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:58:57,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:58:57,172 INFO L87 Difference]: Start difference. First operand 221616 states and 241463 transitions. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:00,829 INFO L93 Difference]: Finished difference Result 449490 states and 489228 transitions. [2023-12-20 16:59:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:00,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 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 578 [2023-12-20 16:59:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:01,118 INFO L225 Difference]: With dead ends: 449490 [2023-12-20 16:59:01,118 INFO L226 Difference]: Without dead ends: 222366 [2023-12-20 16:59:01,217 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 [2023-12-20 16:59:01,218 INFO L413 NwaCegarLoop]: 1466 mSDtfsCounter, 1007 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:01,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 1593 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 16:59:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222366 states. [2023-12-20 16:59:03,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222366 to 209763. [2023-12-20 16:59:03,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209763 states, 209762 states have (on average 1.0597677367683374) internal successors, (222299), 209762 states have internal predecessors, (222299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209763 states to 209763 states and 222299 transitions. [2023-12-20 16:59:03,644 INFO L78 Accepts]: Start accepts. Automaton has 209763 states and 222299 transitions. Word has length 578 [2023-12-20 16:59:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:03,644 INFO L495 AbstractCegarLoop]: Abstraction has 209763 states and 222299 transitions. [2023-12-20 16:59:03,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 209763 states and 222299 transitions. [2023-12-20 16:59:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2023-12-20 16:59:03,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:03,658 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:03,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 16:59:03,658 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:03,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 953432689, now seen corresponding path program 1 times [2023-12-20 16:59:03,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:03,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40414986] [2023-12-20 16:59:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:03,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1025 backedges. 827 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-12-20 16:59:04,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40414986] [2023-12-20 16:59:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40414986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:04,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:04,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:04,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264391402] [2023-12-20 16:59:04,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:04,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:04,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:04,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:04,098 INFO L87 Difference]: Start difference. First operand 209763 states and 222299 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:07,508 INFO L93 Difference]: Finished difference Result 420317 states and 445398 transitions. [2023-12-20 16:59:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:07,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 582 [2023-12-20 16:59:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:07,790 INFO L225 Difference]: With dead ends: 420317 [2023-12-20 16:59:07,790 INFO L226 Difference]: Without dead ends: 211342 [2023-12-20 16:59:07,875 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 [2023-12-20 16:59:07,875 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 922 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:07,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1413 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 16:59:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211342 states. [2023-12-20 16:59:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211342 to 209756. [2023-12-20 16:59:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209756 states, 209755 states have (on average 1.050721079354485) internal successors, (220394), 209755 states have internal predecessors, (220394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209756 states to 209756 states and 220394 transitions. [2023-12-20 16:59:10,721 INFO L78 Accepts]: Start accepts. Automaton has 209756 states and 220394 transitions. Word has length 582 [2023-12-20 16:59:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:10,722 INFO L495 AbstractCegarLoop]: Abstraction has 209756 states and 220394 transitions. [2023-12-20 16:59:10,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 209756 states and 220394 transitions. [2023-12-20 16:59:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2023-12-20 16:59:10,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:10,768 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:10,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 16:59:10,769 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:10,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:10,769 INFO L85 PathProgramCache]: Analyzing trace with hash -779194147, now seen corresponding path program 1 times [2023-12-20 16:59:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:10,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571627453] [2023-12-20 16:59:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:10,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 730 trivial. 0 not checked. [2023-12-20 16:59:11,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:11,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571627453] [2023-12-20 16:59:11,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571627453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:11,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:11,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:11,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069456569] [2023-12-20 16:59:11,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:11,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:11,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:11,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:11,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:11,250 INFO L87 Difference]: Start difference. First operand 209756 states and 220394 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:14,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:14,886 INFO L93 Difference]: Finished difference Result 425050 states and 446890 transitions. [2023-12-20 16:59:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:14,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 633 [2023-12-20 16:59:14,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:15,211 INFO L225 Difference]: With dead ends: 425050 [2023-12-20 16:59:15,211 INFO L226 Difference]: Without dead ends: 233402 [2023-12-20 16:59:15,308 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 [2023-12-20 16:59:15,309 INFO L413 NwaCegarLoop]: 1759 mSDtfsCounter, 669 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:15,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1917 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:59:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233402 states. [2023-12-20 16:59:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233402 to 227889. [2023-12-20 16:59:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227889 states, 227888 states have (on average 1.0485764937162114) internal successors, (238958), 227888 states have internal predecessors, (238958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227889 states to 227889 states and 238958 transitions. [2023-12-20 16:59:17,908 INFO L78 Accepts]: Start accepts. Automaton has 227889 states and 238958 transitions. Word has length 633 [2023-12-20 16:59:17,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:17,908 INFO L495 AbstractCegarLoop]: Abstraction has 227889 states and 238958 transitions. [2023-12-20 16:59:17,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 227889 states and 238958 transitions. [2023-12-20 16:59:17,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2023-12-20 16:59:17,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:17,924 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 16:59:17,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 16:59:17,924 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:17,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash -787216213, now seen corresponding path program 1 times [2023-12-20 16:59:17,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:17,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718574776] [2023-12-20 16:59:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:17,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 16:59:18,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:18,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718574776] [2023-12-20 16:59:18,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718574776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:18,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:18,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 16:59:18,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918911195] [2023-12-20 16:59:18,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:18,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:59:18,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:18,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:59:18,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:59:18,544 INFO L87 Difference]: Start difference. First operand 227889 states and 238958 transitions. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:24,850 INFO L93 Difference]: Finished difference Result 549614 states and 577372 transitions. [2023-12-20 16:59:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:59:24,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 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 665 [2023-12-20 16:59:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:25,236 INFO L225 Difference]: With dead ends: 549614 [2023-12-20 16:59:25,236 INFO L226 Difference]: Without dead ends: 320938 [2023-12-20 16:59:25,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 16:59:25,550 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1576 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 5497 mSolverCounterSat, 738 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 6235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 738 IncrementalHoareTripleChecker+Valid, 5497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:25,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 692 Invalid, 6235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [738 Valid, 5497 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 16:59:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320938 states. [2023-12-20 16:59:28,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320938 to 312929. [2023-12-20 16:59:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312929 states, 312928 states have (on average 1.0504141527763575) internal successors, (328704), 312928 states have internal predecessors, (328704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312929 states to 312929 states and 328704 transitions. [2023-12-20 16:59:29,310 INFO L78 Accepts]: Start accepts. Automaton has 312929 states and 328704 transitions. Word has length 665 [2023-12-20 16:59:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:29,310 INFO L495 AbstractCegarLoop]: Abstraction has 312929 states and 328704 transitions. [2023-12-20 16:59:29,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:29,311 INFO L276 IsEmpty]: Start isEmpty. Operand 312929 states and 328704 transitions. [2023-12-20 16:59:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2023-12-20 16:59:29,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:29,330 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:29,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 16:59:29,330 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:29,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:29,330 INFO L85 PathProgramCache]: Analyzing trace with hash 546538839, now seen corresponding path program 1 times [2023-12-20 16:59:29,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:29,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982212305] [2023-12-20 16:59:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:29,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 798 proven. 75 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2023-12-20 16:59:30,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:30,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982212305] [2023-12-20 16:59:30,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982212305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 16:59:30,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826425364] [2023-12-20 16:59:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:30,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 16:59:30,574 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) [2023-12-20 16:59:30,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 16:59:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:30,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 16:59:30,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 16:59:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 936 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-20 16:59:31,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 16:59:31,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826425364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:31,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 16:59:31,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-20 16:59:31,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683231827] [2023-12-20 16:59:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:31,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 16:59:31,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 16:59:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 16:59:31,451 INFO L87 Difference]: Start difference. First operand 312929 states and 328704 transitions. Second operand has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:36,039 INFO L93 Difference]: Finished difference Result 606967 states and 638224 transitions. [2023-12-20 16:59:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 16:59:36,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 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 673 [2023-12-20 16:59:36,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:36,482 INFO L225 Difference]: With dead ends: 606967 [2023-12-20 16:59:36,482 INFO L226 Difference]: Without dead ends: 316081 [2023-12-20 16:59:36,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 16:59:36,598 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 2256 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:36,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 773 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 16:59:36,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316081 states. [2023-12-20 16:59:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316081 to 313716. [2023-12-20 16:59:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313716 states, 313715 states have (on average 1.048301802591524) internal successors, (328868), 313715 states have internal predecessors, (328868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313716 states to 313716 states and 328868 transitions. [2023-12-20 16:59:40,718 INFO L78 Accepts]: Start accepts. Automaton has 313716 states and 328868 transitions. Word has length 673 [2023-12-20 16:59:40,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:40,719 INFO L495 AbstractCegarLoop]: Abstraction has 313716 states and 328868 transitions. [2023-12-20 16:59:40,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:40,719 INFO L276 IsEmpty]: Start isEmpty. Operand 313716 states and 328868 transitions. [2023-12-20 16:59:40,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2023-12-20 16:59:40,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:40,747 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:40,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 16:59:40,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 16:59:40,953 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:40,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:40,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2086155854, now seen corresponding path program 1 times [2023-12-20 16:59:40,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:40,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919000934] [2023-12-20 16:59:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 602 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-20 16:59:41,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919000934] [2023-12-20 16:59:41,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919000934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:41,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:41,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:41,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001098450] [2023-12-20 16:59:41,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:41,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:41,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:41,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:41,687 INFO L87 Difference]: Start difference. First operand 313716 states and 328868 transitions. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:46,480 INFO L93 Difference]: Finished difference Result 681765 states and 716526 transitions. [2023-12-20 16:59:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:46,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 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 702 [2023-12-20 16:59:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:47,026 INFO L225 Difference]: With dead ends: 681765 [2023-12-20 16:59:47,026 INFO L226 Difference]: Without dead ends: 390092 [2023-12-20 16:59:47,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:47,168 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 961 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 902 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 902 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:47,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 616 Invalid, 3259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [902 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 16:59:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390092 states. [2023-12-20 16:59:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390092 to 386148. [2023-12-20 16:59:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386148 states, 386147 states have (on average 1.0456794951145547) internal successors, (403786), 386147 states have internal predecessors, (403786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386148 states to 386148 states and 403786 transitions. [2023-12-20 16:59:51,954 INFO L78 Accepts]: Start accepts. Automaton has 386148 states and 403786 transitions. Word has length 702 [2023-12-20 16:59:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 16:59:51,955 INFO L495 AbstractCegarLoop]: Abstraction has 386148 states and 403786 transitions. [2023-12-20 16:59:51,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:51,955 INFO L276 IsEmpty]: Start isEmpty. Operand 386148 states and 403786 transitions. [2023-12-20 16:59:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-12-20 16:59:51,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 16:59:51,978 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 16:59:51,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 16:59:51,978 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 16:59:51,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 16:59:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1853658196, now seen corresponding path program 1 times [2023-12-20 16:59:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 16:59:51,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065555116] [2023-12-20 16:59:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 16:59:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 16:59:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 16:59:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 680 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-20 16:59:52,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 16:59:52,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065555116] [2023-12-20 16:59:52,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065555116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 16:59:52,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 16:59:52,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 16:59:52,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508165375] [2023-12-20 16:59:52,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 16:59:52,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 16:59:52,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 16:59:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 16:59:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 16:59:52,700 INFO L87 Difference]: Start difference. First operand 386148 states and 403786 transitions. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 16:59:57,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 16:59:57,534 INFO L93 Difference]: Finished difference Result 790435 states and 826766 transitions. [2023-12-20 16:59:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 16:59:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 726 [2023-12-20 16:59:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 16:59:58,215 INFO L225 Difference]: With dead ends: 790435 [2023-12-20 16:59:58,216 INFO L226 Difference]: Without dead ends: 420034 [2023-12-20 16:59:58,363 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 [2023-12-20 16:59:58,364 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 669 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 16:59:58,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1867 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 16:59:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420034 states. [2023-12-20 17:00:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420034 to 391660. [2023-12-20 17:00:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391660 states, 391659 states have (on average 1.0448042812752931) internal successors, (409207), 391659 states have internal predecessors, (409207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391660 states to 391660 states and 409207 transitions. [2023-12-20 17:00:03,293 INFO L78 Accepts]: Start accepts. Automaton has 391660 states and 409207 transitions. Word has length 726 [2023-12-20 17:00:03,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:00:03,294 INFO L495 AbstractCegarLoop]: Abstraction has 391660 states and 409207 transitions. [2023-12-20 17:00:03,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:00:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 391660 states and 409207 transitions. [2023-12-20 17:00:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2023-12-20 17:00:03,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:00:03,673 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:00:03,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:00:03,673 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:00:03,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:00:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -572277783, now seen corresponding path program 1 times [2023-12-20 17:00:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:00:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565237643] [2023-12-20 17:00:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:00:03,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:00:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:00:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1437 backedges. 955 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2023-12-20 17:00:04,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:00:04,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565237643] [2023-12-20 17:00:04,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565237643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:00:04,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:00:04,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:00:04,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967451377] [2023-12-20 17:00:04,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:00:04,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:00:04,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:00:04,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:00:04,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:00:04,192 INFO L87 Difference]: Start difference. First operand 391660 states and 409207 transitions. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)