/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/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 13:28:28,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 13:28:28,651 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 13:28:28,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 13:28:28,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 13:28:28,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 13:28:28,675 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 13:28:28,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 13:28:28,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 13:28:28,679 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 13:28:28,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 13:28:28,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 13:28:28,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 13:28:28,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 13:28:28,681 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 13:28:28,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 13:28:28,681 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 13:28:28,681 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 13:28:28,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 13:28:28,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 13:28:28,681 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 13:28:28,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 13:28:28,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 13:28:28,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 13:28:28,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 13:28:28,682 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 13:28:28,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 13:28:28,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 13:28:28,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 13:28:28,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 13:28:28,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 13:28:28,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 13:28:28,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:28:28,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 13:28:28,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 13:28:28,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 13:28:28,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 13:28:28,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 13:28:28,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 13:28:28,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 13:28:28,685 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 13:28:28,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 13:28:28,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 13:28:28,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 13:28:28,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 13:28:28,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 13:28:28,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 13:28:28,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 13:28:28,896 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 13:28:28,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2023-12-20 13:28:29,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 13:28:30,223 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 13:28:30,224 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2023-12-20 13:28:30,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d95a843/0fb2cebe22b74d1388fa6e4d74e9c980/FLAG15616822c [2023-12-20 13:28:30,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d95a843/0fb2cebe22b74d1388fa6e4d74e9c980 [2023-12-20 13:28:30,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 13:28:30,263 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 13:28:30,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 13:28:30,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 13:28:30,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 13:28:30,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:28:30" (1/1) ... [2023-12-20 13:28:30,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8f1b54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:30, skipping insertion in model container [2023-12-20 13:28:30,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 01:28:30" (1/1) ... [2023-12-20 13:28:30,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 13:28:30,587 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2023-12-20 13:28:30,672 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2023-12-20 13:28:31,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:28:31,096 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 13:28:31,126 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[11677,11690] [2023-12-20 13:28:31,133 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c[19425,19438] [2023-12-20 13:28:31,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 13:28:31,445 INFO L206 MainTranslator]: Completed translation [2023-12-20 13:28:31,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31 WrapperNode [2023-12-20 13:28:31,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 13:28:31,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 13:28:31,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 13:28:31,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 13:28:31,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:31,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:31,815 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5095 [2023-12-20 13:28:31,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 13:28:31,816 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 13:28:31,816 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 13:28:31,816 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 13:28:31,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:31,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:31,881 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:31,982 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 13:28:31,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:31,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:32,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:32,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:32,128 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:32,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:32,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 13:28:32,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 13:28:32,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 13:28:32,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 13:28:32,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (1/1) ... [2023-12-20 13:28:32,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 13:28:32,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:28:32,228 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 13:28:32,303 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 13:28:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 13:28:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 13:28:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 13:28:32,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 13:28:32,450 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 13:28:32,452 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 13:28:35,343 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 13:28:35,387 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 13:28:35,387 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 13:28:35,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:28:35 BoogieIcfgContainer [2023-12-20 13:28:35,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 13:28:35,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 13:28:35,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 13:28:35,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 13:28:35,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 01:28:30" (1/3) ... [2023-12-20 13:28:35,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ecf1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:28:35, skipping insertion in model container [2023-12-20 13:28:35,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 01:28:31" (2/3) ... [2023-12-20 13:28:35,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ecf1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 01:28:35, skipping insertion in model container [2023-12-20 13:28:35,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 01:28:35" (3/3) ... [2023-12-20 13:28:35,392 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label09.c [2023-12-20 13:28:35,403 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 13:28:35,403 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 13:28:35,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 13:28:35,445 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;@5cad1ec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 13:28:35,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 13:28:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 13:28:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:28:35,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:35,456 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] [2023-12-20 13:28:35,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:35,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:35,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-12-20 13:28:35,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853820357] [2023-12-20 13:28:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:35,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:35,635 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 13:28:35,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:35,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853820357] [2023-12-20 13:28:35,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853820357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:35,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:35,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 13:28:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89859465] [2023-12-20 13:28:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:35,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 13:28:35,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 13:28:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 13:28:35,670 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:28:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:35,752 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-12-20 13:28:35,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 13:28:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-20 13:28:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:35,776 INFO L225 Difference]: With dead ends: 1633 [2023-12-20 13:28:35,776 INFO L226 Difference]: Without dead ends: 830 [2023-12-20 13:28:35,781 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 13:28:35,783 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:35,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-20 13:28:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-20 13:28:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 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 13:28:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-20 13:28:35,849 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-20 13:28:35,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:35,850 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-20 13:28:35,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:28:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-20 13:28:35,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-20 13:28:35,850 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:35,850 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] [2023-12-20 13:28:35,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 13:28:35,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:35,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-12-20 13:28:35,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:35,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827197589] [2023-12-20 13:28:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:35,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:36,059 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 13:28:36,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:36,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827197589] [2023-12-20 13:28:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827197589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:36,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:36,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:28:36,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321060735] [2023-12-20 13:28:36,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:36,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:28:36,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:28:36,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:28:36,061 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:28:36,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:36,123 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-20 13:28:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:28:36,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-20 13:28:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:36,128 INFO L225 Difference]: With dead ends: 874 [2023-12-20 13:28:36,128 INFO L226 Difference]: Without dead ends: 830 [2023-12-20 13:28:36,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:28:36,130 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:36,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-20 13:28:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-20 13:28:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 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 13:28:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-20 13:28:36,143 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-20 13:28:36,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:36,144 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-20 13:28:36,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 13:28:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-20 13:28:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 13:28:36,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:36,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:36,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 13:28:36,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:36,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-12-20 13:28:36,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546544475] [2023-12-20 13:28:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:36,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:36,277 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 13:28:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546544475] [2023-12-20 13:28:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546544475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:36,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:36,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:28:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648629096] [2023-12-20 13:28:36,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:36,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:28:36,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:36,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:28:36,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:28:36,283 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:36,519 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-12-20 13:28:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 13:28:36,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 13:28:36,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:36,523 INFO L225 Difference]: With dead ends: 1240 [2023-12-20 13:28:36,523 INFO L226 Difference]: Without dead ends: 1199 [2023-12-20 13:28:36,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-20 13:28:36,526 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:36,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:28:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-20 13:28:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-12-20 13:28:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 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 13:28:36,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-12-20 13:28:36,545 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-12-20 13:28:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:36,550 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-12-20 13:28:36,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-12-20 13:28:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:28:36,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:36,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:36,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 13:28:36,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:36,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-12-20 13:28:36,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:36,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446717810] [2023-12-20 13:28:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:36,670 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 13:28:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:36,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446717810] [2023-12-20 13:28:36,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446717810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:36,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:36,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061920997] [2023-12-20 13:28:36,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:36,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:36,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:36,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:36,673 INFO L87 Difference]: Start difference. First operand 869 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:36,699 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-12-20 13:28:36,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:36,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 13:28:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:36,702 INFO L225 Difference]: With dead ends: 1018 [2023-12-20 13:28:36,702 INFO L226 Difference]: Without dead ends: 938 [2023-12-20 13:28:36,706 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 13:28:36,710 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:36,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-20 13:28:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-20 13:28:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 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 13:28:36,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-12-20 13:28:36,726 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-12-20 13:28:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:36,726 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-12-20 13:28:36,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-12-20 13:28:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 13:28:36,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:36,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:36,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 13:28:36,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:36,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2023-12-20 13:28:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822940425] [2023-12-20 13:28:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:36,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:36,957 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 13:28:36,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:36,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822940425] [2023-12-20 13:28:36,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822940425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:36,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:36,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:28:36,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812933178] [2023-12-20 13:28:36,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:36,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:28:36,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:28:36,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:28:36,958 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:37,104 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-12-20 13:28:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:28:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-20 13:28:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:37,109 INFO L225 Difference]: With dead ends: 1085 [2023-12-20 13:28:37,109 INFO L226 Difference]: Without dead ends: 938 [2023-12-20 13:28:37,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-20 13:28:37,109 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 7439 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:37,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 1775 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-20 13:28:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-20 13:28:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 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 13:28:37,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-12-20 13:28:37,123 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-12-20 13:28:37,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:37,123 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-12-20 13:28:37,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-12-20 13:28:37,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 13:28:37,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:37,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:37,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 13:28:37,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:37,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-12-20 13:28:37,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:37,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459816796] [2023-12-20 13:28:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:37,219 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 13:28:37,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459816796] [2023-12-20 13:28:37,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459816796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:37,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:37,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 13:28:37,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179830696] [2023-12-20 13:28:37,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:37,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:28:37,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:28:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:28:37,220 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:28:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:37,247 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-12-20 13:28:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:28:37,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-20 13:28:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:37,251 INFO L225 Difference]: With dead ends: 944 [2023-12-20 13:28:37,251 INFO L226 Difference]: Without dead ends: 942 [2023-12-20 13:28:37,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:28:37,251 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:37,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-20 13:28:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-12-20 13:28:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 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 13:28:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-12-20 13:28:37,264 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-12-20 13:28:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:37,264 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-12-20 13:28:37,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 13:28:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-12-20 13:28:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:28:37,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:37,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:37,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 13:28:37,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:37,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:37,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-12-20 13:28:37,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:37,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184301418] [2023-12-20 13:28:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:37,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:37,321 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 13:28:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184301418] [2023-12-20 13:28:37,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184301418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:37,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:37,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:37,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715833683] [2023-12-20 13:28:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:37,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:37,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:37,323 INFO L87 Difference]: Start difference. First operand 940 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:37,343 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-12-20 13:28:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:37,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:28:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:37,347 INFO L225 Difference]: With dead ends: 1102 [2023-12-20 13:28:37,347 INFO L226 Difference]: Without dead ends: 1018 [2023-12-20 13:28:37,347 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 13:28:37,347 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:37,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-20 13:28:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-12-20 13:28:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 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 13:28:37,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-12-20 13:28:37,362 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-12-20 13:28:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:37,362 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-12-20 13:28:37,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-12-20 13:28:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:28:37,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:37,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:37,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 13:28:37,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:37,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-12-20 13:28:37,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121289019] [2023-12-20 13:28:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:37,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:37,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121289019] [2023-12-20 13:28:37,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121289019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:37,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:37,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838158893] [2023-12-20 13:28:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:37,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:37,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:37,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:37,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:37,391 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:37,413 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-12-20 13:28:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:37,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:28:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:37,417 INFO L225 Difference]: With dead ends: 1442 [2023-12-20 13:28:37,417 INFO L226 Difference]: Without dead ends: 1217 [2023-12-20 13:28:37,417 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 13:28:37,417 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:37,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-20 13:28:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-12-20 13:28:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 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 13:28:37,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-12-20 13:28:37,436 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-12-20 13:28:37,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:37,436 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-12-20 13:28:37,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-12-20 13:28:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:28:37,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:37,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:37,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 13:28:37,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:37,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-12-20 13:28:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:37,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659933686] [2023-12-20 13:28:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:37,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:37,464 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 13:28:37,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659933686] [2023-12-20 13:28:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659933686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:37,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:37,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688983029] [2023-12-20 13:28:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:37,465 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:37,492 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-12-20 13:28:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:37,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:28:37,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:37,496 INFO L225 Difference]: With dead ends: 2015 [2023-12-20 13:28:37,496 INFO L226 Difference]: Without dead ends: 1591 [2023-12-20 13:28:37,497 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 13:28:37,497 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:37,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-20 13:28:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-12-20 13:28:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 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 13:28:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-12-20 13:28:37,523 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-12-20 13:28:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:37,523 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-12-20 13:28:37,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-12-20 13:28:37,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:28:37,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:37,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:37,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 13:28:37,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:37,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-12-20 13:28:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:37,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753455642] [2023-12-20 13:28:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:37,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:37,565 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 13:28:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:37,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753455642] [2023-12-20 13:28:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753455642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:37,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993780089] [2023-12-20 13:28:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:37,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:37,567 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:37,604 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-12-20 13:28:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:28:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:37,610 INFO L225 Difference]: With dead ends: 3089 [2023-12-20 13:28:37,610 INFO L226 Difference]: Without dead ends: 2291 [2023-12-20 13:28:37,611 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 13:28:37,611 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:37,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-12-20 13:28:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-12-20 13:28:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 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 13:28:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-12-20 13:28:37,700 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-12-20 13:28:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:37,700 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-12-20 13:28:37,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-12-20 13:28:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 13:28:37,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:37,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:37,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 13:28:37,701 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:37,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-12-20 13:28:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2243152] [2023-12-20 13:28:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:37,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:37,732 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 13:28:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2243152] [2023-12-20 13:28:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2243152] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:37,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:37,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301711028] [2023-12-20 13:28:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:37,734 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:37,795 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-12-20 13:28:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:37,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 13:28:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:37,804 INFO L225 Difference]: With dead ends: 5093 [2023-12-20 13:28:37,805 INFO L226 Difference]: Without dead ends: 3595 [2023-12-20 13:28:37,806 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 13:28:37,807 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:37,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-20 13:28:37,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-12-20 13:28:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 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 13:28:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-12-20 13:28:37,890 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-12-20 13:28:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:37,890 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-12-20 13:28:37,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 13:28:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-12-20 13:28:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 13:28:37,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:37,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:37,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 13:28:37,892 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:37,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:37,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1483191019, now seen corresponding path program 1 times [2023-12-20 13:28:37,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:37,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632994889] [2023-12-20 13:28:37,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:37,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:38,002 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 13:28:38,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:38,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632994889] [2023-12-20 13:28:38,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632994889] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:38,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:38,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105684794] [2023-12-20 13:28:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:38,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:28:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:28:38,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:28:38,003 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 13:28:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:43,118 INFO L93 Difference]: Finished difference Result 5848 states and 9850 transitions. [2023-12-20 13:28:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:28:43,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 13:28:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:43,130 INFO L225 Difference]: With dead ends: 5848 [2023-12-20 13:28:43,130 INFO L226 Difference]: Without dead ends: 5095 [2023-12-20 13:28:43,131 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 13:28:43,131 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 2382 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:43,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2382 Valid, 791 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-20 13:28:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5095 states. [2023-12-20 13:28:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5095 to 5095. [2023-12-20 13:28:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5093 states have (on average 1.503043392892205) internal successors, (7655), 5094 states have internal predecessors, (7655), 0 states have call successors, (0), 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 13:28:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 7655 transitions. [2023-12-20 13:28:43,211 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 7655 transitions. Word has length 66 [2023-12-20 13:28:43,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:43,211 INFO L495 AbstractCegarLoop]: Abstraction has 5095 states and 7655 transitions. [2023-12-20 13:28:43,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 13:28:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 7655 transitions. [2023-12-20 13:28:43,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:28:43,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:43,216 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:43,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 13:28:43,216 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:43,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-12-20 13:28:43,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:43,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912312882] [2023-12-20 13:28:43,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:28:43,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:43,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912312882] [2023-12-20 13:28:43,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912312882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:43,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:43,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:28:43,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463412637] [2023-12-20 13:28:43,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:43,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:28:43,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:28:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:28:43,312 INFO L87 Difference]: Start difference. First operand 5095 states and 7655 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 13:28:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:43,600 INFO L93 Difference]: Finished difference Result 18883 states and 27645 transitions. [2023-12-20 13:28:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:28:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 73 [2023-12-20 13:28:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:43,638 INFO L225 Difference]: With dead ends: 18883 [2023-12-20 13:28:43,638 INFO L226 Difference]: Without dead ends: 16897 [2023-12-20 13:28:43,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:28:43,646 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:43,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:28:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16897 states. [2023-12-20 13:28:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16897 to 7495. [2023-12-20 13:28:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 7493 states have (on average 1.4807153343120245) internal successors, (11095), 7494 states have internal predecessors, (11095), 0 states have call successors, (0), 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 13:28:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 11095 transitions. [2023-12-20 13:28:43,983 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 11095 transitions. Word has length 73 [2023-12-20 13:28:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:43,983 INFO L495 AbstractCegarLoop]: Abstraction has 7495 states and 11095 transitions. [2023-12-20 13:28:43,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 13:28:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 11095 transitions. [2023-12-20 13:28:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:28:43,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:43,985 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:43,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 13:28:43,985 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:43,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-12-20 13:28:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:43,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785097606] [2023-12-20 13:28:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:43,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 13:28:44,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:44,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785097606] [2023-12-20 13:28:44,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785097606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:44,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:44,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:28:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054415394] [2023-12-20 13:28:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:44,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:28:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:28:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:28:44,073 INFO L87 Difference]: Start difference. First operand 7495 states and 11095 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 13:28:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:44,415 INFO L93 Difference]: Finished difference Result 21683 states and 31677 transitions. [2023-12-20 13:28:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:28:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-20 13:28:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:44,442 INFO L225 Difference]: With dead ends: 21683 [2023-12-20 13:28:44,443 INFO L226 Difference]: Without dead ends: 18881 [2023-12-20 13:28:44,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:28:44,452 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6336 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:44,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 3592 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:28:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18881 states. [2023-12-20 13:28:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18881 to 11287. [2023-12-20 13:28:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11287 states, 11285 states have (on average 1.4638015064244572) internal successors, (16519), 11286 states have internal predecessors, (16519), 0 states have call successors, (0), 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 13:28:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11287 states to 11287 states and 16519 transitions. [2023-12-20 13:28:44,722 INFO L78 Accepts]: Start accepts. Automaton has 11287 states and 16519 transitions. Word has length 73 [2023-12-20 13:28:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:44,723 INFO L495 AbstractCegarLoop]: Abstraction has 11287 states and 16519 transitions. [2023-12-20 13:28:44,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 13:28:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 11287 states and 16519 transitions. [2023-12-20 13:28:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:28:44,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:44,724 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:44,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 13:28:44,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:44,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:44,725 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2023-12-20 13:28:44,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:44,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990144199] [2023-12-20 13:28:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:44,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 13:28:44,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:44,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990144199] [2023-12-20 13:28:44,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990144199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:44,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:44,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:28:44,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748365330] [2023-12-20 13:28:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:44,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:28:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:28:44,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:28:44,894 INFO L87 Difference]: Start difference. First operand 11287 states and 16519 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 13:28:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:45,317 INFO L93 Difference]: Finished difference Result 24483 states and 35693 transitions. [2023-12-20 13:28:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:28:45,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-20 13:28:45,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:45,348 INFO L225 Difference]: With dead ends: 24483 [2023-12-20 13:28:45,348 INFO L226 Difference]: Without dead ends: 21681 [2023-12-20 13:28:45,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:28:45,359 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:45,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:28:45,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21681 states. [2023-12-20 13:28:45,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21681 to 14087. [2023-12-20 13:28:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14087 states, 14085 states have (on average 1.4579339723109692) internal successors, (20535), 14086 states have internal predecessors, (20535), 0 states have call successors, (0), 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 13:28:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14087 states to 14087 states and 20535 transitions. [2023-12-20 13:28:45,813 INFO L78 Accepts]: Start accepts. Automaton has 14087 states and 20535 transitions. Word has length 73 [2023-12-20 13:28:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:45,813 INFO L495 AbstractCegarLoop]: Abstraction has 14087 states and 20535 transitions. [2023-12-20 13:28:45,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 13:28:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 14087 states and 20535 transitions. [2023-12-20 13:28:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:28:45,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:45,816 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:45,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 13:28:45,816 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:45,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:45,816 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2023-12-20 13:28:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:45,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62264727] [2023-12-20 13:28:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 13:28:45,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:45,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62264727] [2023-12-20 13:28:45,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62264727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:45,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:45,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:28:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329366244] [2023-12-20 13:28:45,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:45,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:28:45,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:45,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:28:45,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:28:45,925 INFO L87 Difference]: Start difference. First operand 14087 states and 20535 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 13:28:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:46,483 INFO L93 Difference]: Finished difference Result 27283 states and 39709 transitions. [2023-12-20 13:28:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:28:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-20 13:28:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:46,519 INFO L225 Difference]: With dead ends: 27283 [2023-12-20 13:28:46,520 INFO L226 Difference]: Without dead ends: 24481 [2023-12-20 13:28:46,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:28:46,530 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:46,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:28:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24481 states. [2023-12-20 13:28:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24481 to 16887. [2023-12-20 13:28:47,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16887 states, 16885 states have (on average 1.4540124370743264) internal successors, (24551), 16886 states have internal predecessors, (24551), 0 states have call successors, (0), 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 13:28:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16887 states to 16887 states and 24551 transitions. [2023-12-20 13:28:47,069 INFO L78 Accepts]: Start accepts. Automaton has 16887 states and 24551 transitions. Word has length 73 [2023-12-20 13:28:47,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:47,070 INFO L495 AbstractCegarLoop]: Abstraction has 16887 states and 24551 transitions. [2023-12-20 13:28:47,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 13:28:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 16887 states and 24551 transitions. [2023-12-20 13:28:47,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-20 13:28:47,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:47,071 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:47,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 13:28:47,072 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:47,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2023-12-20 13:28:47,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:47,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423527393] [2023-12-20 13:28:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 13:28:47,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:47,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423527393] [2023-12-20 13:28:47,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423527393] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:47,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:47,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 13:28:47,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480323705] [2023-12-20 13:28:47,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:47,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 13:28:47,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 13:28:47,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-20 13:28:47,172 INFO L87 Difference]: Start difference. First operand 16887 states and 24551 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 13:28:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:47,625 INFO L93 Difference]: Finished difference Result 30083 states and 43725 transitions. [2023-12-20 13:28:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 13:28:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-20 13:28:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:47,658 INFO L225 Difference]: With dead ends: 30083 [2023-12-20 13:28:47,658 INFO L226 Difference]: Without dead ends: 27281 [2023-12-20 13:28:47,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-20 13:28:47,668 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:47,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 13:28:47,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27281 states. [2023-12-20 13:28:48,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27281 to 19687. [2023-12-20 13:28:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4512065024130048) internal successors, (28567), 19686 states have internal predecessors, (28567), 0 states have call successors, (0), 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 13:28:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28567 transitions. [2023-12-20 13:28:48,177 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28567 transitions. Word has length 73 [2023-12-20 13:28:48,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:48,177 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28567 transitions. [2023-12-20 13:28:48,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 13:28:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28567 transitions. [2023-12-20 13:28:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-20 13:28:48,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:48,179 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 13:28:48,179 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:48,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2023-12-20 13:28:48,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:48,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941417025] [2023-12-20 13:28:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:48,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:48,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:48,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941417025] [2023-12-20 13:28:48,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941417025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:48,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:48,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:48,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760069560] [2023-12-20 13:28:48,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:48,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:48,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:48,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:48,231 INFO L87 Difference]: Start difference. First operand 19687 states and 28567 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:28:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:48,523 INFO L93 Difference]: Finished difference Result 37083 states and 53545 transitions. [2023-12-20 13:28:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-20 13:28:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:48,544 INFO L225 Difference]: With dead ends: 37083 [2023-12-20 13:28:48,544 INFO L226 Difference]: Without dead ends: 19689 [2023-12-20 13:28:48,560 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 13:28:48,561 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:48,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19689 states. [2023-12-20 13:28:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19689 to 19687. [2023-12-20 13:28:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19687 states, 19685 states have (on average 1.4361696723393447) internal successors, (28271), 19686 states have internal predecessors, (28271), 0 states have call successors, (0), 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 13:28:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19687 states to 19687 states and 28271 transitions. [2023-12-20 13:28:49,054 INFO L78 Accepts]: Start accepts. Automaton has 19687 states and 28271 transitions. Word has length 74 [2023-12-20 13:28:49,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:49,054 INFO L495 AbstractCegarLoop]: Abstraction has 19687 states and 28271 transitions. [2023-12-20 13:28:49,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 13:28:49,055 INFO L276 IsEmpty]: Start isEmpty. Operand 19687 states and 28271 transitions. [2023-12-20 13:28:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 13:28:49,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:49,058 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:49,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 13:28:49,058 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:49,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2023-12-20 13:28:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:49,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129532862] [2023-12-20 13:28:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:49,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129532862] [2023-12-20 13:28:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129532862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:49,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:49,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759977032] [2023-12-20 13:28:49,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:49,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:49,118 INFO L87 Difference]: Start difference. First operand 19687 states and 28271 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 13:28:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:49,252 INFO L93 Difference]: Finished difference Result 26157 states and 37548 transitions. [2023-12-20 13:28:49,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:49,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-20 13:28:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:49,262 INFO L225 Difference]: With dead ends: 26157 [2023-12-20 13:28:49,262 INFO L226 Difference]: Without dead ends: 8763 [2023-12-20 13:28:49,275 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 13:28:49,275 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:49,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:49,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8763 states. [2023-12-20 13:28:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8763 to 8756. [2023-12-20 13:28:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8756 states, 8754 states have (on average 1.4571624400274161) internal successors, (12756), 8755 states have internal predecessors, (12756), 0 states have call successors, (0), 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 13:28:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8756 states to 8756 states and 12756 transitions. [2023-12-20 13:28:49,420 INFO L78 Accepts]: Start accepts. Automaton has 8756 states and 12756 transitions. Word has length 75 [2023-12-20 13:28:49,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:49,421 INFO L495 AbstractCegarLoop]: Abstraction has 8756 states and 12756 transitions. [2023-12-20 13:28:49,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 13:28:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 8756 states and 12756 transitions. [2023-12-20 13:28:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 13:28:49,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:49,422 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 13:28:49,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 13:28:49,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:49,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:49,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2023-12-20 13:28:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:49,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423829357] [2023-12-20 13:28:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:49,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:49,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423829357] [2023-12-20 13:28:49,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423829357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:49,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:49,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:49,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265514860] [2023-12-20 13:28:49,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:49,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:49,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:49,484 INFO L87 Difference]: Start difference. First operand 8756 states and 12756 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:28:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:49,555 INFO L93 Difference]: Finished difference Result 11984 states and 17334 transitions. [2023-12-20 13:28:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:49,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-20 13:28:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:49,561 INFO L225 Difference]: With dead ends: 11984 [2023-12-20 13:28:49,561 INFO L226 Difference]: Without dead ends: 5534 [2023-12-20 13:28:49,566 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 13:28:49,567 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:49,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5534 states. [2023-12-20 13:28:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5534 to 5532. [2023-12-20 13:28:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5530 states have (on average 1.4698010849909584) internal successors, (8128), 5531 states have internal predecessors, (8128), 0 states have call successors, (0), 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 13:28:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 8128 transitions. [2023-12-20 13:28:49,650 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 8128 transitions. Word has length 76 [2023-12-20 13:28:49,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:49,650 INFO L495 AbstractCegarLoop]: Abstraction has 5532 states and 8128 transitions. [2023-12-20 13:28:49,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 13:28:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 8128 transitions. [2023-12-20 13:28:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 13:28:49,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:49,651 INFO L195 NwaCegarLoop]: trace histogram [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 13:28:49,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 13:28:49,652 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:49,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:49,653 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2023-12-20 13:28:49,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:49,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765686028] [2023-12-20 13:28:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:49,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:49,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765686028] [2023-12-20 13:28:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765686028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:49,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:49,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721874343] [2023-12-20 13:28:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:49,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:49,730 INFO L87 Difference]: Start difference. First operand 5532 states and 8128 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:28:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:49,775 INFO L93 Difference]: Finished difference Result 7148 states and 10392 transitions. [2023-12-20 13:28:49,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:49,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 13:28:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:49,779 INFO L225 Difference]: With dead ends: 7148 [2023-12-20 13:28:49,779 INFO L226 Difference]: Without dead ends: 3922 [2023-12-20 13:28:49,784 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 13:28:49,784 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:49,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2023-12-20 13:28:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3920. [2023-12-20 13:28:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3920 states, 3918 states have (on average 1.49055640632976) internal successors, (5840), 3919 states have internal predecessors, (5840), 0 states have call successors, (0), 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 13:28:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 5840 transitions. [2023-12-20 13:28:49,835 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 5840 transitions. Word has length 78 [2023-12-20 13:28:49,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:49,835 INFO L495 AbstractCegarLoop]: Abstraction has 3920 states and 5840 transitions. [2023-12-20 13:28:49,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 13:28:49,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 5840 transitions. [2023-12-20 13:28:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 13:28:49,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:49,836 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:49,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 13:28:49,836 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:49,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2023-12-20 13:28:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:49,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27790832] [2023-12-20 13:28:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:49,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:49,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27790832] [2023-12-20 13:28:49,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27790832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:28:49,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:28:49,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:28:49,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700832652] [2023-12-20 13:28:49,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:28:49,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 13:28:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:49,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 13:28:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 13:28:49,890 INFO L87 Difference]: Start difference. First operand 3920 states and 5840 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:28:49,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:49,921 INFO L93 Difference]: Finished difference Result 4730 states and 6960 transitions. [2023-12-20 13:28:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 13:28:49,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 13:28:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:49,925 INFO L225 Difference]: With dead ends: 4730 [2023-12-20 13:28:49,925 INFO L226 Difference]: Without dead ends: 3116 [2023-12-20 13:28:49,927 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 13:28:49,927 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:49,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:49,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2023-12-20 13:28:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 3114. [2023-12-20 13:28:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3114 states, 3112 states have (on average 1.5131748071979434) internal successors, (4709), 3113 states have internal predecessors, (4709), 0 states have call successors, (0), 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 13:28:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3114 states to 3114 states and 4709 transitions. [2023-12-20 13:28:49,961 INFO L78 Accepts]: Start accepts. Automaton has 3114 states and 4709 transitions. Word has length 80 [2023-12-20 13:28:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:49,961 INFO L495 AbstractCegarLoop]: Abstraction has 3114 states and 4709 transitions. [2023-12-20 13:28:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 13:28:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3114 states and 4709 transitions. [2023-12-20 13:28:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-20 13:28:49,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:49,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:49,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 13:28:49,962 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:49,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2023-12-20 13:28:49,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:49,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207680808] [2023-12-20 13:28:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:28:50,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207680808] [2023-12-20 13:28:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207680808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:28:50,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311032471] [2023-12-20 13:28:50,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:50,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:28:50,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:28:50,053 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 13:28:50,070 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 13:28:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:50,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 13:28:50,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:28:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:28:50,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:28:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 13:28:50,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311032471] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:28:50,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:28:50,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-20 13:28:50,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638500505] [2023-12-20 13:28:50,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:28:50,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 13:28:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:50,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 13:28:50,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-20 13:28:50,562 INFO L87 Difference]: Start difference. First operand 3114 states and 4709 transitions. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 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 13:28:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:50,675 INFO L93 Difference]: Finished difference Result 5057 states and 7311 transitions. [2023-12-20 13:28:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 13:28:50,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 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 82 [2023-12-20 13:28:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:50,680 INFO L225 Difference]: With dead ends: 5057 [2023-12-20 13:28:50,680 INFO L226 Difference]: Without dead ends: 4249 [2023-12-20 13:28:50,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-20 13:28:50,681 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1604 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:50,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 3314 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 13:28:50,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2023-12-20 13:28:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4182. [2023-12-20 13:28:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4180 states have (on average 1.4497607655502391) internal successors, (6060), 4181 states have internal predecessors, (6060), 0 states have call successors, (0), 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 13:28:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 6060 transitions. [2023-12-20 13:28:50,764 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 6060 transitions. Word has length 82 [2023-12-20 13:28:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:50,764 INFO L495 AbstractCegarLoop]: Abstraction has 4182 states and 6060 transitions. [2023-12-20 13:28:50,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 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 13:28:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 6060 transitions. [2023-12-20 13:28:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:28:50,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:50,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:50,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 13:28:50,971 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,SelfDestructingSolverStorable22 [2023-12-20 13:28:50,971 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:50,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:50,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1527392688, now seen corresponding path program 1 times [2023-12-20 13:28:50,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:50,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961561438] [2023-12-20 13:28:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:50,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:51,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961561438] [2023-12-20 13:28:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961561438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:28:51,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873317521] [2023-12-20 13:28:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:51,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:28:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:28:51,920 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 13:28:51,936 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 13:28:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:52,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:28:52,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:28:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:52,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:28:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:53,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873317521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:28:53,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:28:53,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-12-20 13:28:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897483053] [2023-12-20 13:28:53,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:28:53,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:28:53,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:28:53,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:28:53,395 INFO L87 Difference]: Start difference. First operand 4182 states and 6060 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 13:28:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:56,088 INFO L93 Difference]: Finished difference Result 11883 states and 15945 transitions. [2023-12-20 13:28:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 13:28:56,089 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 83 [2023-12-20 13:28:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:56,099 INFO L225 Difference]: With dead ends: 11883 [2023-12-20 13:28:56,100 INFO L226 Difference]: Without dead ends: 10102 [2023-12-20 13:28:56,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 13:28:56,104 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 18102 mSDsluCounter, 9498 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18102 SdHoareTripleChecker+Valid, 10996 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:56,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18102 Valid, 10996 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 13:28:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10102 states. [2023-12-20 13:28:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10102 to 9528. [2023-12-20 13:28:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9528 states, 9526 states have (on average 1.3588074742809153) internal successors, (12944), 9527 states have internal predecessors, (12944), 0 states have call successors, (0), 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 13:28:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9528 states to 9528 states and 12944 transitions. [2023-12-20 13:28:56,315 INFO L78 Accepts]: Start accepts. Automaton has 9528 states and 12944 transitions. Word has length 83 [2023-12-20 13:28:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:56,315 INFO L495 AbstractCegarLoop]: Abstraction has 9528 states and 12944 transitions. [2023-12-20 13:28:56,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 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 13:28:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9528 states and 12944 transitions. [2023-12-20 13:28:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:28:56,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:56,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:56,324 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 13:28:56,524 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,SelfDestructingSolverStorable23 [2023-12-20 13:28:56,524 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:56,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:56,525 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2023-12-20 13:28:56,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:56,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920614571] [2023-12-20 13:28:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:56,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:56,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920614571] [2023-12-20 13:28:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920614571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:28:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67873039] [2023-12-20 13:28:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:56,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:28:56,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:28:56,832 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 13:28:56,888 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 13:28:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:56,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:28:56,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:28:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:57,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:28:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:58,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67873039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:28:58,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:28:58,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 13:28:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051797479] [2023-12-20 13:28:58,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:28:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 13:28:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:28:58,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 13:28:58,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-20 13:28:58,112 INFO L87 Difference]: Start difference. First operand 9528 states and 12944 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 13:28:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:28:58,964 INFO L93 Difference]: Finished difference Result 17052 states and 22598 transitions. [2023-12-20 13:28:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 13:28:58,965 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-12-20 13:28:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:28:58,999 INFO L225 Difference]: With dead ends: 17052 [2023-12-20 13:28:59,000 INFO L226 Difference]: Without dead ends: 10268 [2023-12-20 13:28:59,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 13:28:59,004 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 12230 mSDsluCounter, 6490 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12230 SdHoareTripleChecker+Valid, 8000 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:28:59,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12230 Valid, 8000 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:28:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10268 states. [2023-12-20 13:28:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10268 to 9384. [2023-12-20 13:28:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9384 states, 9382 states have (on average 1.3504583244510766) internal successors, (12670), 9383 states have internal predecessors, (12670), 0 states have call successors, (0), 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 13:28:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9384 states to 9384 states and 12670 transitions. [2023-12-20 13:28:59,211 INFO L78 Accepts]: Start accepts. Automaton has 9384 states and 12670 transitions. Word has length 83 [2023-12-20 13:28:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:28:59,211 INFO L495 AbstractCegarLoop]: Abstraction has 9384 states and 12670 transitions. [2023-12-20 13:28:59,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 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 13:28:59,211 INFO L276 IsEmpty]: Start isEmpty. Operand 9384 states and 12670 transitions. [2023-12-20 13:28:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 13:28:59,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:28:59,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:28:59,217 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 13:28:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:28:59,417 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:28:59,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:28:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash -900611408, now seen corresponding path program 1 times [2023-12-20 13:28:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:28:59,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393299342] [2023-12-20 13:28:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:28:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:28:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:28:59,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393299342] [2023-12-20 13:28:59,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393299342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:28:59,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331708407] [2023-12-20 13:28:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:28:59,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:28:59,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:28:59,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:28:59,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 13:28:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:28:59,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:28:59,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:29:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:00,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:29:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:00,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331708407] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:29:00,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:29:00,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 13:29:00,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392949137] [2023-12-20 13:29:00,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:29:00,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 13:29:00,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:29:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 13:29:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 13:29:00,991 INFO L87 Difference]: Start difference. First operand 9384 states and 12670 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 13:29:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:29:01,794 INFO L93 Difference]: Finished difference Result 17649 states and 23213 transitions. [2023-12-20 13:29:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 13:29:01,795 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 83 [2023-12-20 13:29:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:29:01,805 INFO L225 Difference]: With dead ends: 17649 [2023-12-20 13:29:01,805 INFO L226 Difference]: Without dead ends: 11704 [2023-12-20 13:29:01,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 13:29:01,811 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 7842 mSDsluCounter, 6516 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7842 SdHoareTripleChecker+Valid, 8045 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:29:01,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7842 Valid, 8045 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:29:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2023-12-20 13:29:02,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 11186. [2023-12-20 13:29:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11186 states, 11184 states have (on average 1.3357474964234621) internal successors, (14939), 11185 states have internal predecessors, (14939), 0 states have call successors, (0), 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 13:29:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 14939 transitions. [2023-12-20 13:29:02,126 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 14939 transitions. Word has length 83 [2023-12-20 13:29:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:29:02,126 INFO L495 AbstractCegarLoop]: Abstraction has 11186 states and 14939 transitions. [2023-12-20 13:29:02,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 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 13:29:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 14939 transitions. [2023-12-20 13:29:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 13:29:02,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:29:02,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:29:02,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 13:29:02,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 13:29:02,333 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:29:02,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:29:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1230460860, now seen corresponding path program 1 times [2023-12-20 13:29:02,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:29:02,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166998452] [2023-12-20 13:29:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:02,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:29:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:02,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:29:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166998452] [2023-12-20 13:29:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166998452] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:29:02,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795579037] [2023-12-20 13:29:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:02,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:29:02,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:29:02,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:29:02,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 13:29:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:02,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:29:02,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:29:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:03,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:29:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795579037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:29:04,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:29:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-20 13:29:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319990984] [2023-12-20 13:29:04,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:29:04,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 13:29:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:29:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 13:29:04,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-20 13:29:04,205 INFO L87 Difference]: Start difference. First operand 11186 states and 14939 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 13:29:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:29:06,848 INFO L93 Difference]: Finished difference Result 36092 states and 46560 transitions. [2023-12-20 13:29:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 13:29:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 84 [2023-12-20 13:29:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:29:06,882 INFO L225 Difference]: With dead ends: 36092 [2023-12-20 13:29:06,882 INFO L226 Difference]: Without dead ends: 27601 [2023-12-20 13:29:06,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 13:29:06,896 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 19029 mSDsluCounter, 8056 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19029 SdHoareTripleChecker+Valid, 9562 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:29:06,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19029 Valid, 9562 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:29:06,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27601 states. [2023-12-20 13:29:07,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27601 to 26353. [2023-12-20 13:29:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26353 states, 26351 states have (on average 1.2795719327539752) internal successors, (33718), 26352 states have internal predecessors, (33718), 0 states have call successors, (0), 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 13:29:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26353 states to 26353 states and 33718 transitions. [2023-12-20 13:29:07,830 INFO L78 Accepts]: Start accepts. Automaton has 26353 states and 33718 transitions. Word has length 84 [2023-12-20 13:29:07,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:29:07,830 INFO L495 AbstractCegarLoop]: Abstraction has 26353 states and 33718 transitions. [2023-12-20 13:29:07,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 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 13:29:07,830 INFO L276 IsEmpty]: Start isEmpty. Operand 26353 states and 33718 transitions. [2023-12-20 13:29:07,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:29:07,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:29:07,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:29:07,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 13:29:08,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 13:29:08,036 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:29:08,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:29:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2023-12-20 13:29:08,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:29:08,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219911387] [2023-12-20 13:29:08,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:08,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:29:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:10,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:29:10,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219911387] [2023-12-20 13:29:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219911387] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:29:10,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624359501] [2023-12-20 13:29:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:10,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:29:10,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:29:10,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:29:10,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 13:29:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:10,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 13:29:10,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:29:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:11,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:29:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:11,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624359501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:29:11,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:29:11,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 11, 11] total 50 [2023-12-20 13:29:11,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897726779] [2023-12-20 13:29:11,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:29:11,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 13:29:11,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:29:11,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 13:29:11,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2277, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 13:29:11,986 INFO L87 Difference]: Start difference. First operand 26353 states and 33718 transitions. Second operand has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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 13:29:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:29:49,298 INFO L93 Difference]: Finished difference Result 45511 states and 57143 transitions. [2023-12-20 13:29:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2023-12-20 13:29:49,299 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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 86 [2023-12-20 13:29:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:29:49,335 INFO L225 Difference]: With dead ends: 45511 [2023-12-20 13:29:49,335 INFO L226 Difference]: Without dead ends: 36564 [2023-12-20 13:29:49,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31644 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=12521, Invalid=68419, Unknown=0, NotChecked=0, Total=80940 [2023-12-20 13:29:49,355 INFO L413 NwaCegarLoop]: 1713 mSDtfsCounter, 30221 mSDsluCounter, 35273 mSDsCounter, 0 mSdLazyCounter, 8913 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30221 SdHoareTripleChecker+Valid, 36986 SdHoareTripleChecker+Invalid, 9088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 8913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:29:49,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30221 Valid, 36986 Invalid, 9088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 8913 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-20 13:29:49,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36564 states. [2023-12-20 13:29:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36564 to 25690. [2023-12-20 13:29:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25690 states, 25688 states have (on average 1.2767440049828713) internal successors, (32797), 25689 states have internal predecessors, (32797), 0 states have call successors, (0), 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 13:29:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25690 states to 25690 states and 32797 transitions. [2023-12-20 13:29:50,349 INFO L78 Accepts]: Start accepts. Automaton has 25690 states and 32797 transitions. Word has length 86 [2023-12-20 13:29:50,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:29:50,349 INFO L495 AbstractCegarLoop]: Abstraction has 25690 states and 32797 transitions. [2023-12-20 13:29:50,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.68) internal successors, (234), 50 states have internal predecessors, (234), 0 states have call successors, (0), 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 13:29:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 25690 states and 32797 transitions. [2023-12-20 13:29:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 13:29:50,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:29:50,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:29:50,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 13:29:50,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 13:29:50,557 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:29:50,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:29:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash 301365880, now seen corresponding path program 1 times [2023-12-20 13:29:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:29:50,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557269110] [2023-12-20 13:29:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:50,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:29:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:29:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557269110] [2023-12-20 13:29:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557269110] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:29:51,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667094465] [2023-12-20 13:29:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:29:51,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:29:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:29:51,061 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:29:51,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 13:29:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:29:51,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 13:29:51,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:29:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:53,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:29:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:29:56,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667094465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:29:56,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:29:56,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 23] total 53 [2023-12-20 13:29:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525156549] [2023-12-20 13:29:56,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:29:56,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 13:29:56,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:29:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 13:29:56,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=2424, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 13:29:56,256 INFO L87 Difference]: Start difference. First operand 25690 states and 32797 transitions. Second operand has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 13:31:05,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:31:05,864 INFO L93 Difference]: Finished difference Result 128168 states and 160384 transitions. [2023-12-20 13:31:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2023-12-20 13:31:05,865 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 86 [2023-12-20 13:31:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:31:06,002 INFO L225 Difference]: With dead ends: 128168 [2023-12-20 13:31:06,002 INFO L226 Difference]: Without dead ends: 115965 [2023-12-20 13:31:06,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53519 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=19156, Invalid=102994, Unknown=0, NotChecked=0, Total=122150 [2023-12-20 13:31:06,018 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 19076 mSDsluCounter, 16724 mSDsCounter, 0 mSdLazyCounter, 5312 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19076 SdHoareTripleChecker+Valid, 18303 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-20 13:31:06,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19076 Valid, 18303 Invalid, 5503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [191 Valid, 5312 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-20 13:31:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115965 states. [2023-12-20 13:31:07,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115965 to 26571. [2023-12-20 13:31:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26571 states, 26569 states have (on average 1.274379916443976) internal successors, (33859), 26570 states have internal predecessors, (33859), 0 states have call successors, (0), 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 13:31:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26571 states to 26571 states and 33859 transitions. [2023-12-20 13:31:07,723 INFO L78 Accepts]: Start accepts. Automaton has 26571 states and 33859 transitions. Word has length 86 [2023-12-20 13:31:07,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:31:07,723 INFO L495 AbstractCegarLoop]: Abstraction has 26571 states and 33859 transitions. [2023-12-20 13:31:07,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.226415094339623) internal successors, (224), 53 states have internal predecessors, (224), 0 states have call successors, (0), 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 13:31:07,723 INFO L276 IsEmpty]: Start isEmpty. Operand 26571 states and 33859 transitions. [2023-12-20 13:31:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 13:31:07,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:31:07,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:31:07,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 13:31:07,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:07,931 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:31:07,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:31:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -537853704, now seen corresponding path program 1 times [2023-12-20 13:31:07,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:31:07,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828451703] [2023-12-20 13:31:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:31:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:08,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:31:08,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828451703] [2023-12-20 13:31:08,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828451703] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:31:08,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652915902] [2023-12-20 13:31:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:08,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:08,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:31:08,406 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:31:08,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 13:31:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:08,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 13:31:08,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:31:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:09,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:31:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:09,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652915902] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:31:09,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:31:09,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 15] total 35 [2023-12-20 13:31:09,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087193813] [2023-12-20 13:31:09,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:31:09,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 13:31:09,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:31:09,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 13:31:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1037, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 13:31:09,958 INFO L87 Difference]: Start difference. First operand 26571 states and 33859 transitions. Second operand has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 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 13:31:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:31:15,541 INFO L93 Difference]: Finished difference Result 44503 states and 56252 transitions. [2023-12-20 13:31:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-20 13:31:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 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 87 [2023-12-20 13:31:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:31:15,571 INFO L225 Difference]: With dead ends: 44503 [2023-12-20 13:31:15,571 INFO L226 Difference]: Without dead ends: 28765 [2023-12-20 13:31:15,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1851 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1873, Invalid=6137, Unknown=0, NotChecked=0, Total=8010 [2023-12-20 13:31:15,579 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 12019 mSDsluCounter, 18359 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12019 SdHoareTripleChecker+Valid, 19893 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 13:31:15,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12019 Valid, 19893 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 13:31:15,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28765 states. [2023-12-20 13:31:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28765 to 27616. [2023-12-20 13:31:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27616 states, 27614 states have (on average 1.271565148113276) internal successors, (35113), 27615 states have internal predecessors, (35113), 0 states have call successors, (0), 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 13:31:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27616 states to 27616 states and 35113 transitions. [2023-12-20 13:31:16,979 INFO L78 Accepts]: Start accepts. Automaton has 27616 states and 35113 transitions. Word has length 87 [2023-12-20 13:31:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:31:16,979 INFO L495 AbstractCegarLoop]: Abstraction has 27616 states and 35113 transitions. [2023-12-20 13:31:16,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.0285714285714285) internal successors, (246), 35 states have internal predecessors, (246), 0 states have call successors, (0), 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 13:31:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 27616 states and 35113 transitions. [2023-12-20 13:31:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-20 13:31:16,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:31:16,984 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:17,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 13:31:17,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:17,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:31:17,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:31:17,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1948015120, now seen corresponding path program 1 times [2023-12-20 13:31:17,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:31:17,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119567942] [2023-12-20 13:31:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:17,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:31:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 30 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:17,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:31:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119567942] [2023-12-20 13:31:17,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119567942] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:31:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443793855] [2023-12-20 13:31:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:17,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:31:17,796 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:31:17,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 13:31:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:17,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:31:17,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:31:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 26 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:18,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:31:20,151 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:20,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443793855] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:31:20,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:31:20,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-20 13:31:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998076093] [2023-12-20 13:31:20,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:31:20,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-20 13:31:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:31:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-20 13:31:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1135, Unknown=0, NotChecked=0, Total=1260 [2023-12-20 13:31:20,153 INFO L87 Difference]: Start difference. First operand 27616 states and 35113 transitions. Second operand has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 13:31:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:31:25,713 INFO L93 Difference]: Finished difference Result 46774 states and 58980 transitions. [2023-12-20 13:31:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-20 13:31:25,714 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 134 [2023-12-20 13:31:25,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:31:25,743 INFO L225 Difference]: With dead ends: 46774 [2023-12-20 13:31:25,743 INFO L226 Difference]: Without dead ends: 29180 [2023-12-20 13:31:25,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1644, Invalid=7668, Unknown=0, NotChecked=0, Total=9312 [2023-12-20 13:31:25,751 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 22059 mSDsluCounter, 18371 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22059 SdHoareTripleChecker+Valid, 19880 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:31:25,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22059 Valid, 19880 Invalid, 1765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 13:31:25,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29180 states. [2023-12-20 13:31:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29180 to 27616. [2023-12-20 13:31:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27616 states, 27614 states have (on average 1.2597595422611718) internal successors, (34787), 27615 states have internal predecessors, (34787), 0 states have call successors, (0), 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 13:31:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27616 states to 27616 states and 34787 transitions. [2023-12-20 13:31:27,268 INFO L78 Accepts]: Start accepts. Automaton has 27616 states and 34787 transitions. Word has length 134 [2023-12-20 13:31:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:31:27,268 INFO L495 AbstractCegarLoop]: Abstraction has 27616 states and 34787 transitions. [2023-12-20 13:31:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.472222222222221) internal successors, (377), 35 states have internal predecessors, (377), 0 states have call successors, (0), 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 13:31:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27616 states and 34787 transitions. [2023-12-20 13:31:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 13:31:27,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:31:27,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:27,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 13:31:27,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:27,481 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:31:27,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:31:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1363002568, now seen corresponding path program 1 times [2023-12-20 13:31:27,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:31:27,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229224317] [2023-12-20 13:31:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:27,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:31:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:28,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:31:28,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229224317] [2023-12-20 13:31:28,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229224317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:31:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954061950] [2023-12-20 13:31:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:28,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:28,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:31:28,035 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:31:28,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 13:31:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:28,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 13:31:28,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:31:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 42 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:28,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:31:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:30,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954061950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:31:30,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:31:30,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:31:30,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398862926] [2023-12-20 13:31:30,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:31:30,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:31:30,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:31:30,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:31:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:31:30,589 INFO L87 Difference]: Start difference. First operand 27616 states and 34787 transitions. Second operand has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:31:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:31:34,051 INFO L93 Difference]: Finished difference Result 89362 states and 111277 transitions. [2023-12-20 13:31:34,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 13:31:34,051 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 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 135 [2023-12-20 13:31:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:31:34,116 INFO L225 Difference]: With dead ends: 89362 [2023-12-20 13:31:34,116 INFO L226 Difference]: Without dead ends: 65744 [2023-12-20 13:31:34,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=505, Invalid=1751, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 13:31:34,125 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 10648 mSDsluCounter, 13918 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10648 SdHoareTripleChecker+Valid, 15454 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:31:34,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10648 Valid, 15454 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:31:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65744 states. [2023-12-20 13:31:37,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65744 to 55028. [2023-12-20 13:31:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55028 states, 55026 states have (on average 1.236088394577109) internal successors, (68017), 55027 states have internal predecessors, (68017), 0 states have call successors, (0), 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 13:31:37,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55028 states to 55028 states and 68017 transitions. [2023-12-20 13:31:37,350 INFO L78 Accepts]: Start accepts. Automaton has 55028 states and 68017 transitions. Word has length 135 [2023-12-20 13:31:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:31:37,351 INFO L495 AbstractCegarLoop]: Abstraction has 55028 states and 68017 transitions. [2023-12-20 13:31:37,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.444444444444445) internal successors, (282), 26 states have internal predecessors, (282), 0 states have call successors, (0), 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 13:31:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 55028 states and 68017 transitions. [2023-12-20 13:31:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 13:31:37,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:31:37,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:31:37,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 13:31:37,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-20 13:31:37,564 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:31:37,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:31:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1491251620, now seen corresponding path program 1 times [2023-12-20 13:31:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:31:37,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140444687] [2023-12-20 13:31:37,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:37,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:31:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:38,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:31:38,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140444687] [2023-12-20 13:31:38,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140444687] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:31:38,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638149037] [2023-12-20 13:31:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:31:38,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:31:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:31:38,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:31:38,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 13:31:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:31:38,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 13:31:38,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:31:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:40,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:31:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:31:43,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638149037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:31:43,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:31:43,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 53 [2023-12-20 13:31:43,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949213923] [2023-12-20 13:31:43,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:31:43,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 13:31:43,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:31:43,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 13:31:43,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2543, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 13:31:43,554 INFO L87 Difference]: Start difference. First operand 55028 states and 68017 transitions. Second operand has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:33:02,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:33:02,557 INFO L93 Difference]: Finished difference Result 159492 states and 192325 transitions. [2023-12-20 13:33:02,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2023-12-20 13:33:02,558 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-20 13:33:02,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:33:02,697 INFO L225 Difference]: With dead ends: 159492 [2023-12-20 13:33:02,697 INFO L226 Difference]: Without dead ends: 138492 [2023-12-20 13:33:02,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70525 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=17382, Invalid=153600, Unknown=0, NotChecked=0, Total=170982 [2023-12-20 13:33:02,722 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 25081 mSDsluCounter, 38876 mSDsCounter, 0 mSdLazyCounter, 8521 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25081 SdHoareTripleChecker+Valid, 40583 SdHoareTripleChecker+Invalid, 8922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 8521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:33:02,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25081 Valid, 40583 Invalid, 8922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 8521 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-20 13:33:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138492 states. [2023-12-20 13:33:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138492 to 80016. [2023-12-20 13:33:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80016 states, 80014 states have (on average 1.2247731646961781) internal successors, (97999), 80015 states have internal predecessors, (97999), 0 states have call successors, (0), 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 13:33:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80016 states to 80016 states and 97999 transitions. [2023-12-20 13:33:08,594 INFO L78 Accepts]: Start accepts. Automaton has 80016 states and 97999 transitions. Word has length 136 [2023-12-20 13:33:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:33:08,594 INFO L495 AbstractCegarLoop]: Abstraction has 80016 states and 97999 transitions. [2023-12-20 13:33:08,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.433962264150943) internal successors, (394), 53 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:33:08,595 INFO L276 IsEmpty]: Start isEmpty. Operand 80016 states and 97999 transitions. [2023-12-20 13:33:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-20 13:33:08,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:33:08,604 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:33:08,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-20 13:33:08,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 13:33:08,809 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:33:08,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:33:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash 104112932, now seen corresponding path program 1 times [2023-12-20 13:33:08,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:33:08,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476271536] [2023-12-20 13:33:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:33:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:33:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:33:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:33:09,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:33:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476271536] [2023-12-20 13:33:09,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476271536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:33:09,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566865845] [2023-12-20 13:33:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:33:09,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:33:09,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:33:09,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:33:09,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 13:33:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:33:09,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 13:33:09,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:33:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:33:10,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:33:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 49 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:33:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566865845] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:33:11,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:33:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 13:33:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048735470] [2023-12-20 13:33:11,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:33:11,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 13:33:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:33:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 13:33:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 13:33:11,806 INFO L87 Difference]: Start difference. First operand 80016 states and 97999 transitions. Second operand has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 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 13:33:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:33:16,999 INFO L93 Difference]: Finished difference Result 121772 states and 148776 transitions. [2023-12-20 13:33:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 13:33:17,000 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-12-20 13:33:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:33:17,070 INFO L225 Difference]: With dead ends: 121772 [2023-12-20 13:33:17,070 INFO L226 Difference]: Without dead ends: 71100 [2023-12-20 13:33:17,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=352, Invalid=1288, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 13:33:17,094 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 10588 mSDsluCounter, 10823 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10588 SdHoareTripleChecker+Valid, 12354 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:33:17,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10588 Valid, 12354 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 13:33:17,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71100 states. [2023-12-20 13:33:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71100 to 70024. [2023-12-20 13:33:22,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70024 states, 70022 states have (on average 1.2180314758218846) internal successors, (85289), 70023 states have internal predecessors, (85289), 0 states have call successors, (0), 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 13:33:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70024 states to 70024 states and 85289 transitions. [2023-12-20 13:33:22,348 INFO L78 Accepts]: Start accepts. Automaton has 70024 states and 85289 transitions. Word has length 136 [2023-12-20 13:33:22,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:33:22,351 INFO L495 AbstractCegarLoop]: Abstraction has 70024 states and 85289 transitions. [2023-12-20 13:33:22,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.407407407407407) internal successors, (281), 26 states have internal predecessors, (281), 0 states have call successors, (0), 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 13:33:22,351 INFO L276 IsEmpty]: Start isEmpty. Operand 70024 states and 85289 transitions. [2023-12-20 13:33:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 13:33:22,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:33:22,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:33:22,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 13:33:22,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-20 13:33:22,568 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:33:22,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:33:22,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1091004872, now seen corresponding path program 1 times [2023-12-20 13:33:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:33:22,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211453943] [2023-12-20 13:33:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:33:22,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:33:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:33:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:33:24,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:33:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211453943] [2023-12-20 13:33:24,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211453943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:33:24,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863284779] [2023-12-20 13:33:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:33:24,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:33:24,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:33:24,868 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:33:24,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 13:33:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:33:25,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 13:33:25,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:33:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:33:26,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:33:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:33:30,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863284779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:33:30,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:33:30,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 19] total 67 [2023-12-20 13:33:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700750933] [2023-12-20 13:33:30,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:33:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-20 13:33:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:33:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-20 13:33:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4166, Unknown=0, NotChecked=0, Total=4422 [2023-12-20 13:33:30,054 INFO L87 Difference]: Start difference. First operand 70024 states and 85289 transitions. Second operand has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:36:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:36:17,720 INFO L93 Difference]: Finished difference Result 307203 states and 369642 transitions. [2023-12-20 13:36:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 530 states. [2023-12-20 13:36:17,721 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 137 [2023-12-20 13:36:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:36:18,157 INFO L225 Difference]: With dead ends: 307203 [2023-12-20 13:36:18,157 INFO L226 Difference]: Without dead ends: 266685 [2023-12-20 13:36:18,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 593 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151464 ImplicationChecksByTransitivity, 133.0s TimeCoverageRelationStatistics Valid=30998, Invalid=322432, Unknown=0, NotChecked=0, Total=353430 [2023-12-20 13:36:18,209 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 43388 mSDsluCounter, 47172 mSDsCounter, 0 mSdLazyCounter, 12504 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43388 SdHoareTripleChecker+Valid, 48799 SdHoareTripleChecker+Invalid, 13126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 12504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-20 13:36:18,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43388 Valid, 48799 Invalid, 13126 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [622 Valid, 12504 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-12-20 13:36:18,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266685 states. [2023-12-20 13:36:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266685 to 101911. [2023-12-20 13:36:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101911 states, 101909 states have (on average 1.2053400582872955) internal successors, (122835), 101910 states have internal predecessors, (122835), 0 states have call successors, (0), 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 13:36:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101911 states to 101911 states and 122835 transitions. [2023-12-20 13:36:28,659 INFO L78 Accepts]: Start accepts. Automaton has 101911 states and 122835 transitions. Word has length 137 [2023-12-20 13:36:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:36:28,659 INFO L495 AbstractCegarLoop]: Abstraction has 101911 states and 122835 transitions. [2023-12-20 13:36:28,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.880597014925373) internal successors, (394), 67 states have internal predecessors, (394), 0 states have call successors, (0), 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 13:36:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 101911 states and 122835 transitions. [2023-12-20 13:36:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 13:36:28,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:36:28,668 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, 2, 2, 2, 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] [2023-12-20 13:36:28,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 13:36:28,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-20 13:36:28,874 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:36:28,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:36:28,874 INFO L85 PathProgramCache]: Analyzing trace with hash 299177372, now seen corresponding path program 1 times [2023-12-20 13:36:28,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:36:28,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429038676] [2023-12-20 13:36:28,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:36:28,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:36:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:36:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:36:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:36:29,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429038676] [2023-12-20 13:36:29,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429038676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 13:36:29,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 13:36:29,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 13:36:29,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076262986] [2023-12-20 13:36:29,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 13:36:29,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 13:36:29,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:36:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 13:36:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 13:36:29,015 INFO L87 Difference]: Start difference. First operand 101911 states and 122835 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 13:36:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:36:40,963 INFO L93 Difference]: Finished difference Result 105705 states and 129198 transitions. [2023-12-20 13:36:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 13:36:40,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-12-20 13:36:40,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:36:41,081 INFO L225 Difference]: With dead ends: 105705 [2023-12-20 13:36:41,081 INFO L226 Difference]: Without dead ends: 103413 [2023-12-20 13:36:41,097 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 13:36:41,097 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 786 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 3784 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 13:36:41,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 883 Invalid, 4448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3784 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 13:36:41,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103413 states. [2023-12-20 13:36:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103413 to 102662. [2023-12-20 13:36:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102662 states, 102660 states have (on average 1.2038573933372296) internal successors, (123588), 102661 states have internal predecessors, (123588), 0 states have call successors, (0), 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 13:36:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102662 states to 102662 states and 123588 transitions. [2023-12-20 13:36:50,155 INFO L78 Accepts]: Start accepts. Automaton has 102662 states and 123588 transitions. Word has length 137 [2023-12-20 13:36:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:36:50,155 INFO L495 AbstractCegarLoop]: Abstraction has 102662 states and 123588 transitions. [2023-12-20 13:36:50,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 13:36:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 102662 states and 123588 transitions. [2023-12-20 13:36:50,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:36:50,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:36:50,164 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:36:50,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 13:36:50,164 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:36:50,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:36:50,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1695630128, now seen corresponding path program 1 times [2023-12-20 13:36:50,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:36:50,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654067924] [2023-12-20 13:36:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:36:50,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:36:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:36:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:36:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:36:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654067924] [2023-12-20 13:36:51,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654067924] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:36:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000390460] [2023-12-20 13:36:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:36:51,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:36:51,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:36:51,992 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:36:51,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 13:36:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:36:52,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 13:36:52,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:36:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:36:53,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:36:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:36:56,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000390460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:36:56,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:36:56,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 17, 18] total 64 [2023-12-20 13:36:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370405457] [2023-12-20 13:36:56,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:36:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-12-20 13:36:56,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:36:56,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-12-20 13:36:56,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3808, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 13:36:56,592 INFO L87 Difference]: Start difference. First operand 102662 states and 123588 transitions. Second operand has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 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 13:37:53,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:37:53,127 INFO L93 Difference]: Finished difference Result 173811 states and 207306 transitions. [2023-12-20 13:37:53,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2023-12-20 13:37:53,128 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 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 138 [2023-12-20 13:37:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:37:53,264 INFO L225 Difference]: With dead ends: 173811 [2023-12-20 13:37:53,264 INFO L226 Difference]: Without dead ends: 123734 [2023-12-20 13:37:53,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18340 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=7464, Invalid=51342, Unknown=0, NotChecked=0, Total=58806 [2023-12-20 13:37:53,302 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 33664 mSDsluCounter, 43384 mSDsCounter, 0 mSdLazyCounter, 7499 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33664 SdHoareTripleChecker+Valid, 44893 SdHoareTripleChecker+Invalid, 7745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 7499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-12-20 13:37:53,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33664 Valid, 44893 Invalid, 7745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [246 Valid, 7499 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-12-20 13:37:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123734 states. [2023-12-20 13:38:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123734 to 105532. [2023-12-20 13:38:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105532 states, 105530 states have (on average 1.2027669856912726) internal successors, (126928), 105531 states have internal predecessors, (126928), 0 states have call successors, (0), 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 13:38:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105532 states to 105532 states and 126928 transitions. [2023-12-20 13:38:04,058 INFO L78 Accepts]: Start accepts. Automaton has 105532 states and 126928 transitions. Word has length 138 [2023-12-20 13:38:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:38:04,058 INFO L495 AbstractCegarLoop]: Abstraction has 105532 states and 126928 transitions. [2023-12-20 13:38:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.859375) internal successors, (375), 64 states have internal predecessors, (375), 0 states have call successors, (0), 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 13:38:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 105532 states and 126928 transitions. [2023-12-20 13:38:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:38:04,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:38:04,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:38:04,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-20 13:38:04,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:38:04,272 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:38:04,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:38:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2045930824, now seen corresponding path program 1 times [2023-12-20 13:38:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:38:04,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193124601] [2023-12-20 13:38:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:38:04,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:38:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:38:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 13 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:38:05,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:38:05,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193124601] [2023-12-20 13:38:05,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193124601] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:38:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261701534] [2023-12-20 13:38:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:38:05,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:38:05,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:38:05,871 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:38:05,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 13:38:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:38:06,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 13:38:06,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:38:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:38:07,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:38:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 50 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:38:10,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261701534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:38:10,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:38:10,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 18, 17] total 62 [2023-12-20 13:38:10,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987034958] [2023-12-20 13:38:10,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:38:10,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 13:38:10,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:38:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 13:38:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=3499, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 13:38:10,095 INFO L87 Difference]: Start difference. First operand 105532 states and 126928 transitions. Second operand has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 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 13:39:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:39:40,577 INFO L93 Difference]: Finished difference Result 374148 states and 445793 transitions. [2023-12-20 13:39:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2023-12-20 13:39:40,578 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 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 138 [2023-12-20 13:39:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:39:41,125 INFO L225 Difference]: With dead ends: 374148 [2023-12-20 13:39:41,125 INFO L226 Difference]: Without dead ends: 312575 [2023-12-20 13:39:41,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31810 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=12121, Invalid=78179, Unknown=0, NotChecked=0, Total=90300 [2023-12-20 13:39:41,163 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 21874 mSDsluCounter, 46201 mSDsCounter, 0 mSdLazyCounter, 5942 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21874 SdHoareTripleChecker+Valid, 47783 SdHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 5942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-20 13:39:41,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21874 Valid, 47783 Invalid, 6178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [236 Valid, 5942 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-20 13:39:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312575 states. [2023-12-20 13:40:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312575 to 234456. [2023-12-20 13:40:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234456 states, 234454 states have (on average 1.1966867701126873) internal successors, (280568), 234455 states have internal predecessors, (280568), 0 states have call successors, (0), 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 13:40:12,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234456 states to 234456 states and 280568 transitions. [2023-12-20 13:40:12,265 INFO L78 Accepts]: Start accepts. Automaton has 234456 states and 280568 transitions. Word has length 138 [2023-12-20 13:40:12,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:40:12,265 INFO L495 AbstractCegarLoop]: Abstraction has 234456 states and 280568 transitions. [2023-12-20 13:40:12,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.145161290322581) internal successors, (381), 62 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 13:40:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 234456 states and 280568 transitions. [2023-12-20 13:40:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:40:12,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:40:12,274 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:40:12,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 13:40:12,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 13:40:12,479 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:40:12,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:40:12,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1884809344, now seen corresponding path program 1 times [2023-12-20 13:40:12,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:40:12,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681485946] [2023-12-20 13:40:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:12,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:40:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:13,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:40:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681485946] [2023-12-20 13:40:13,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681485946] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:40:13,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754323698] [2023-12-20 13:40:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:40:13,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:40:13,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:40:13,143 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:40:13,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 13:40:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:40:13,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 13:40:13,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:40:14,252 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 65 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:14,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:40:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 65 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:40:15,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754323698] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:40:15,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:40:15,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2023-12-20 13:40:15,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376896650] [2023-12-20 13:40:15,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:40:15,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 13:40:15,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:40:15,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 13:40:15,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2023-12-20 13:40:15,014 INFO L87 Difference]: Start difference. First operand 234456 states and 280568 transitions. Second operand has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 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 13:40:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 13:40:52,662 INFO L93 Difference]: Finished difference Result 488363 states and 583648 transitions. [2023-12-20 13:40:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 13:40:52,663 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 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 138 [2023-12-20 13:40:52,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 13:40:53,260 INFO L225 Difference]: With dead ends: 488363 [2023-12-20 13:40:53,261 INFO L226 Difference]: Without dead ends: 262779 [2023-12-20 13:40:53,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=913, Invalid=3779, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 13:40:53,418 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 19359 mSDsluCounter, 9547 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19359 SdHoareTripleChecker+Valid, 11071 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 13:40:53,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19359 Valid, 11071 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 13:40:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262779 states. [2023-12-20 13:41:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262779 to 140253. [2023-12-20 13:41:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140253 states, 140251 states have (on average 1.1965618783466785) internal successors, (167819), 140252 states have internal predecessors, (167819), 0 states have call successors, (0), 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 13:41:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140253 states to 140253 states and 167819 transitions. [2023-12-20 13:41:13,187 INFO L78 Accepts]: Start accepts. Automaton has 140253 states and 167819 transitions. Word has length 138 [2023-12-20 13:41:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 13:41:13,187 INFO L495 AbstractCegarLoop]: Abstraction has 140253 states and 167819 transitions. [2023-12-20 13:41:13,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.551724137931034) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 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 13:41:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 140253 states and 167819 transitions. [2023-12-20 13:41:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 13:41:13,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 13:41:13,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:41:13,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-20 13:41:13,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-20 13:41:13,400 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 13:41:13,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 13:41:13,401 INFO L85 PathProgramCache]: Analyzing trace with hash -819679976, now seen corresponding path program 1 times [2023-12-20 13:41:13,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 13:41:13,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975484477] [2023-12-20 13:41:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:41:13,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 13:41:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:41:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:15,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 13:41:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975484477] [2023-12-20 13:41:15,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975484477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 13:41:15,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125717430] [2023-12-20 13:41:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 13:41:15,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 13:41:15,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 13:41:15,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 13:41:15,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 13:41:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 13:41:15,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-20 13:41:15,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 13:41:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:24,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 13:41:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 13:41:35,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125717430] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 13:41:35,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 13:41:35,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 42, 39] total 109 [2023-12-20 13:41:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878426050] [2023-12-20 13:41:35,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 13:41:35,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2023-12-20 13:41:35,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 13:41:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2023-12-20 13:41:35,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=10888, Unknown=0, NotChecked=0, Total=11772 [2023-12-20 13:41:35,053 INFO L87 Difference]: Start difference. First operand 140253 states and 167819 transitions. Second operand has 109 states, 109 states have (on average 3.403669724770642) internal successors, (371), 109 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 13:42:17,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-20 13:42:17,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6187 ImplicationChecksByTransitivity, 47.4s TimeCoverageRelationStatistics Valid=3481, Invalid=20699, Unknown=0, NotChecked=0, Total=24180 [2023-12-20 13:42:17,377 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 2860 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 2336 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2860 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 2336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-20 13:42:17,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2860 Valid, 3186 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 2336 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-20 13:42:17,378 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 13:42:17,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 13:42:17,390 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:42:17,390 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 13:42:17,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-20 13:42:17,579 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (140253states) and FLOYD_HOARE automaton (currently 60 states, 109 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 156 known predicates. [2023-12-20 13:42:17,581 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 13:42:17,583 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 13:42:17,585 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 13:42:17,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:42:17 BoogieIcfgContainer [2023-12-20 13:42:17,586 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 13:42:17,588 INFO L158 Benchmark]: Toolchain (without parser) took 827323.58ms. Allocated memory was 218.1MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 155.4MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 3.9GB. Max. memory is 8.0GB. [2023-12-20 13:42:17,588 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 167.8MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 13:42:17,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1180.49ms. Allocated memory is still 218.1MB. Free memory was 155.4MB in the beginning and 127.5MB in the end (delta: 28.0MB). Peak memory consumption was 88.7MB. Max. memory is 8.0GB. [2023-12-20 13:42:17,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 368.92ms. Allocated memory was 218.1MB in the beginning and 310.4MB in the end (delta: 92.3MB). Free memory was 127.5MB in the beginning and 213.7MB in the end (delta: -86.2MB). Peak memory consumption was 96.8MB. Max. memory is 8.0GB. [2023-12-20 13:42:17,589 INFO L158 Benchmark]: Boogie Preprocessor took 361.83ms. Allocated memory is still 310.4MB. Free memory was 213.7MB in the beginning and 176.5MB in the end (delta: 37.2MB). Peak memory consumption was 86.5MB. Max. memory is 8.0GB. [2023-12-20 13:42:17,589 INFO L158 Benchmark]: RCFGBuilder took 3208.83ms. Allocated memory was 310.4MB in the beginning and 620.8MB in the end (delta: 310.4MB). Free memory was 176.5MB in the beginning and 336.9MB in the end (delta: -160.4MB). Peak memory consumption was 282.1MB. Max. memory is 8.0GB. [2023-12-20 13:42:17,589 INFO L158 Benchmark]: TraceAbstraction took 822197.52ms. Allocated memory was 620.8MB in the beginning and 5.2GB in the end (delta: 4.6GB). Free memory was 336.4MB in the beginning and 1.3GB in the end (delta: -920.4MB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-20 13:42:17,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 167.8MB. Free memory is still 120.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1180.49ms. Allocated memory is still 218.1MB. Free memory was 155.4MB in the beginning and 127.5MB in the end (delta: 28.0MB). Peak memory consumption was 88.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 368.92ms. Allocated memory was 218.1MB in the beginning and 310.4MB in the end (delta: 92.3MB). Free memory was 127.5MB in the beginning and 213.7MB in the end (delta: -86.2MB). Peak memory consumption was 96.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 361.83ms. Allocated memory is still 310.4MB. Free memory was 213.7MB in the beginning and 176.5MB in the end (delta: 37.2MB). Peak memory consumption was 86.5MB. Max. memory is 8.0GB. * RCFGBuilder took 3208.83ms. Allocated memory was 310.4MB in the beginning and 620.8MB in the end (delta: 310.4MB). Free memory was 176.5MB in the beginning and 336.9MB in the end (delta: -160.4MB). Peak memory consumption was 282.1MB. Max. memory is 8.0GB. * TraceAbstraction took 822197.52ms. Allocated memory was 620.8MB in the beginning and 5.2GB in the end (delta: 4.6GB). Free memory was 336.4MB in the beginning and 1.3GB in the end (delta: -920.4MB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 437]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 437). Cancelled while NwaCegarLoop was constructing difference of abstraction (140253states) and FLOYD_HOARE automaton (currently 60 states, 109 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 156 known predicates. - TimeoutResultAtElement [Line: 653]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 653). Cancelled while NwaCegarLoop was constructing difference of abstraction (140253states) and FLOYD_HOARE automaton (currently 60 states, 109 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 156 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 822.2s, OverallIterations: 40, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 631.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 368959 SdHoareTripleChecker+Valid, 57.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368959 mSDsluCounter, 419244 SdHoareTripleChecker+Invalid, 50.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 359713 mSDsCounter, 4310 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 70450 IncrementalHoareTripleChecker+Invalid, 74760 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4310 mSolverCounterUnsat, 59531 mSDtfsCounter, 70450 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6417 GetRequests, 3440 SyntacticMatches, 4 SemanticMatches, 2972 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372027 ImplicationChecksByTransitivity, 444.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234456occurred in iteration=38, InterpolantAutomatonStates: 2285, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 106.1s AutomataMinimizationTime, 39 MinimizatonAttempts, 601051 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 77.2s InterpolantComputationTime, 5287 NumberOfCodeBlocks, 5287 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 7117 ConstructedInterpolants, 0 QuantifiedInterpolants, 148675 SizeOfPredicates, 149 NumberOfNonLiveVariables, 8875 ConjunctsInSsa, 438 ConjunctsInUnsatCore, 74 InterpolantComputations, 23 PerfectInterpolantSequences, 1399/3543 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown