/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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-66.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 20:10:37,411 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 20:10:37,453 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 20:10:37,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 20:10:37,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 20:10:37,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 20:10:37,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 20:10:37,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 20:10:37,488 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 20:10:37,488 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 20:10:37,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 20:10:37,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 20:10:37,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 20:10:37,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 20:10:37,490 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 20:10:37,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 20:10:37,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 20:10:37,491 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 20:10:37,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 20:10:37,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 20:10:37,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 20:10:37,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 20:10:37,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 20:10:37,493 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 20:10:37,493 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 20:10:37,493 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 20:10:37,493 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 20:10:37,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 20:10:37,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 20:10:37,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 20:10:37,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 20:10:37,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 20:10:37,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:10:37,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 20:10:37,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 20:10:37,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 20:10:37,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 20:10:37,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 20:10:37,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 20:10:37,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 20:10:37,496 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 20:10:37,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 20:10:37,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 20:10:37,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 20:10:37,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 20:10:37,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 20:10:37,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 20:10:37,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 20:10:37,686 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 20:10:37,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-66.i [2023-12-20 20:10:38,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 20:10:38,949 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 20:10:38,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-66.i [2023-12-20 20:10:38,970 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c81b5efd/9850f22a37d247ec91bbc81bc367acd8/FLAG4ea6b797a [2023-12-20 20:10:38,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c81b5efd/9850f22a37d247ec91bbc81bc367acd8 [2023-12-20 20:10:38,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 20:10:38,983 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 20:10:38,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 20:10:38,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 20:10:38,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 20:10:38,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:10:38" (1/1) ... [2023-12-20 20:10:38,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b594237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:38, skipping insertion in model container [2023-12-20 20:10:38,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 08:10:38" (1/1) ... [2023-12-20 20:10:39,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 20:10:39,116 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-66.i[916,929] [2023-12-20 20:10:39,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:10:39,288 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 20:10:39,295 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-66.i[916,929] [2023-12-20 20:10:39,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 20:10:39,359 INFO L206 MainTranslator]: Completed translation [2023-12-20 20:10:39,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39 WrapperNode [2023-12-20 20:10:39,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 20:10:39,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 20:10:39,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 20:10:39,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 20:10:39,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,420 INFO L138 Inliner]: procedures = 26, calls = 123, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 752 [2023-12-20 20:10:39,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 20:10:39,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 20:10:39,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 20:10:39,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 20:10:39,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,456 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 20:10:39,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 20:10:39,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 20:10:39,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 20:10:39,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 20:10:39,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (1/1) ... [2023-12-20 20:10:39,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 20:10:39,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:39,573 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 20:10:39,593 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 20:10:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 20:10:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 20:10:39,597 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 20:10:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 20:10:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 20:10:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 20:10:39,699 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 20:10:39,700 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 20:10:40,298 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 20:10:40,342 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 20:10:40,343 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 20:10:40,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:10:40 BoogieIcfgContainer [2023-12-20 20:10:40,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 20:10:40,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 20:10:40,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 20:10:40,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 20:10:40,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 08:10:38" (1/3) ... [2023-12-20 20:10:40,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7a3162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:10:40, skipping insertion in model container [2023-12-20 20:10:40,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 08:10:39" (2/3) ... [2023-12-20 20:10:40,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7a3162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 08:10:40, skipping insertion in model container [2023-12-20 20:10:40,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 08:10:40" (3/3) ... [2023-12-20 20:10:40,350 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-66.i [2023-12-20 20:10:40,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 20:10:40,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 20:10:40,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 20:10:40,420 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;@a225ead, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 20:10:40,421 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 20:10:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 195 states have (on average 1.5897435897435896) internal successors, (310), 196 states have internal predecessors, (310), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-20 20:10:40,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-12-20 20:10:40,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:40,479 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:40,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:40,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash 614446957, now seen corresponding path program 1 times [2023-12-20 20:10:40,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:40,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563808058] [2023-12-20 20:10:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:40,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:40,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563808058] [2023-12-20 20:10:40,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 20:10:40,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316468120] [2023-12-20 20:10:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:40,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:40,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:40,834 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 20:10:40,868 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 20:10:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:41,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 20:10:41,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 23762 trivial. 0 not checked. [2023-12-20 20:10:41,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:41,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316468120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:41,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:41,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 20:10:41,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2319078] [2023-12-20 20:10:41,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 20:10:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 20:10:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 20:10:41,320 INFO L87 Difference]: Start difference. First operand has 308 states, 195 states have (on average 1.5897435897435896) internal successors, (310), 196 states have internal predecessors, (310), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-20 20:10:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:41,410 INFO L93 Difference]: Finished difference Result 611 states and 1164 transitions. [2023-12-20 20:10:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 20:10:41,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) Word has length 704 [2023-12-20 20:10:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:41,421 INFO L225 Difference]: With dead ends: 611 [2023-12-20 20:10:41,421 INFO L226 Difference]: Without dead ends: 304 [2023-12-20 20:10:41,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 703 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 20:10:41,428 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:41,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:10:41,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-12-20 20:10:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-12-20 20:10:41,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 192 states have (on average 1.5625) internal successors, (300), 192 states have internal predecessors, (300), 110 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-20 20:10:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 520 transitions. [2023-12-20 20:10:41,484 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 520 transitions. Word has length 704 [2023-12-20 20:10:41,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:41,485 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 520 transitions. [2023-12-20 20:10:41,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 2 states have call successors, (110), 2 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 2 states have call successors, (110) [2023-12-20 20:10:41,485 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 520 transitions. [2023-12-20 20:10:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-12-20 20:10:41,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:41,497 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:41,517 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 20:10:41,705 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,SelfDestructingSolverStorable0 [2023-12-20 20:10:41,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:41,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:41,706 INFO L85 PathProgramCache]: Analyzing trace with hash -920415955, now seen corresponding path program 1 times [2023-12-20 20:10:41,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:41,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91243831] [2023-12-20 20:10:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:41,816 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:41,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316471657] [2023-12-20 20:10:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:41,838 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 20:10:41,880 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 20:10:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:42,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:10:42,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-20 20:10:42,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:42,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91243831] [2023-12-20 20:10:42,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316471657] [2023-12-20 20:10:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316471657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:42,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:42,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:10:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398307003] [2023-12-20 20:10:42,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:42,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:10:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:42,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:10:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:42,331 INFO L87 Difference]: Start difference. First operand 304 states and 520 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:42,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:42,379 INFO L93 Difference]: Finished difference Result 784 states and 1345 transitions. [2023-12-20 20:10:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:10:42,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 704 [2023-12-20 20:10:42,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:42,384 INFO L225 Difference]: With dead ends: 784 [2023-12-20 20:10:42,384 INFO L226 Difference]: Without dead ends: 481 [2023-12-20 20:10:42,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 702 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 20:10:42,385 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 295 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:42,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1125 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:10:42,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-12-20 20:10:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 478. [2023-12-20 20:10:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 324 states have (on average 1.6049382716049383) internal successors, (520), 325 states have internal predecessors, (520), 151 states have call successors, (151), 2 states have call predecessors, (151), 2 states have return successors, (151), 150 states have call predecessors, (151), 151 states have call successors, (151) [2023-12-20 20:10:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 822 transitions. [2023-12-20 20:10:42,422 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 822 transitions. Word has length 704 [2023-12-20 20:10:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:42,424 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 822 transitions. [2023-12-20 20:10:42,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:42,424 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 822 transitions. [2023-12-20 20:10:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-12-20 20:10:42,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:42,429 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:42,445 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 20:10:42,637 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,SelfDestructingSolverStorable1 [2023-12-20 20:10:42,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:42,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1688371503, now seen corresponding path program 1 times [2023-12-20 20:10:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002429431] [2023-12-20 20:10:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:42,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:42,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:42,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665201827] [2023-12-20 20:10:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:42,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:42,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:42,689 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 20:10:42,714 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 20:10:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:43,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:10:43,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:43,106 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-20 20:10:43,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:43,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:43,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002429431] [2023-12-20 20:10:43,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:43,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665201827] [2023-12-20 20:10:43,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665201827] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:43,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:43,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:10:43,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416244857] [2023-12-20 20:10:43,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:43,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:10:43,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:43,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:10:43,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:43,109 INFO L87 Difference]: Start difference. First operand 478 states and 822 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:43,166 INFO L93 Difference]: Finished difference Result 1255 states and 2173 transitions. [2023-12-20 20:10:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:10:43,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 704 [2023-12-20 20:10:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:43,171 INFO L225 Difference]: With dead ends: 1255 [2023-12-20 20:10:43,171 INFO L226 Difference]: Without dead ends: 778 [2023-12-20 20:10:43,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 702 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 20:10:43,174 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 257 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:43,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 1065 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:10:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-12-20 20:10:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 774. [2023-12-20 20:10:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 578 states have (on average 1.6539792387543253) internal successors, (956), 581 states have internal predecessors, (956), 191 states have call successors, (191), 4 states have call predecessors, (191), 4 states have return successors, (191), 188 states have call predecessors, (191), 191 states have call successors, (191) [2023-12-20 20:10:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1338 transitions. [2023-12-20 20:10:43,215 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1338 transitions. Word has length 704 [2023-12-20 20:10:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:43,217 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1338 transitions. [2023-12-20 20:10:43,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1338 transitions. [2023-12-20 20:10:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-12-20 20:10:43,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:43,225 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:43,238 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 20:10:43,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:43,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:43,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:43,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1412369745, now seen corresponding path program 1 times [2023-12-20 20:10:43,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:43,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138907103] [2023-12-20 20:10:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:43,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:43,488 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306249594] [2023-12-20 20:10:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:43,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:43,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:43,490 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 20:10:43,515 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 20:10:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:43,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:10:43,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-20 20:10:43,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138907103] [2023-12-20 20:10:43,862 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306249594] [2023-12-20 20:10:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306249594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:10:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849296332] [2023-12-20 20:10:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:10:43,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:10:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:43,864 INFO L87 Difference]: Start difference. First operand 774 states and 1338 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:43,919 INFO L93 Difference]: Finished difference Result 2133 states and 3687 transitions. [2023-12-20 20:10:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:10:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 704 [2023-12-20 20:10:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:43,924 INFO L225 Difference]: With dead ends: 2133 [2023-12-20 20:10:43,925 INFO L226 Difference]: Without dead ends: 1360 [2023-12-20 20:10:43,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 702 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 20:10:43,927 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 283 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:43,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1037 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:10:43,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-12-20 20:10:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1357. [2023-12-20 20:10:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1033 states have (on average 1.6476282671829623) internal successors, (1702), 1040 states have internal predecessors, (1702), 315 states have call successors, (315), 8 states have call predecessors, (315), 8 states have return successors, (315), 308 states have call predecessors, (315), 315 states have call successors, (315) [2023-12-20 20:10:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2332 transitions. [2023-12-20 20:10:43,976 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2332 transitions. Word has length 704 [2023-12-20 20:10:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:43,977 INFO L495 AbstractCegarLoop]: Abstraction has 1357 states and 2332 transitions. [2023-12-20 20:10:43,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:43,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2332 transitions. [2023-12-20 20:10:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 20:10:44,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:44,005 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:44,020 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 20:10:44,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:44,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:44,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash -212734804, now seen corresponding path program 1 times [2023-12-20 20:10:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545821948] [2023-12-20 20:10:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:44,259 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:44,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087396905] [2023-12-20 20:10:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:44,268 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 20:10:44,271 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 20:10:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:44,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 1617 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 20:10:44,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-20 20:10:44,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:44,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545821948] [2023-12-20 20:10:44,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087396905] [2023-12-20 20:10:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087396905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:44,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 20:10:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328880375] [2023-12-20 20:10:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:44,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 20:10:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 20:10:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 20:10:44,632 INFO L87 Difference]: Start difference. First operand 1357 states and 2332 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:44,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:44,722 INFO L93 Difference]: Finished difference Result 4069 states and 6994 transitions. [2023-12-20 20:10:44,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 20:10:44,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 705 [2023-12-20 20:10:44,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:44,734 INFO L225 Difference]: With dead ends: 4069 [2023-12-20 20:10:44,734 INFO L226 Difference]: Without dead ends: 2713 [2023-12-20 20:10:44,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 703 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 20:10:44,738 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 470 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:44,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1051 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 20:10:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2023-12-20 20:10:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2023-12-20 20:10:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2064 states have (on average 1.622093023255814) internal successors, (3348), 2078 states have internal predecessors, (3348), 630 states have call successors, (630), 16 states have call predecessors, (630), 16 states have return successors, (630), 616 states have call predecessors, (630), 630 states have call successors, (630) [2023-12-20 20:10:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 4608 transitions. [2023-12-20 20:10:44,899 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 4608 transitions. Word has length 705 [2023-12-20 20:10:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:44,900 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 4608 transitions. [2023-12-20 20:10:44,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 4608 transitions. [2023-12-20 20:10:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 20:10:44,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:44,906 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:44,916 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 20:10:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:45,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:45,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash -78721298, now seen corresponding path program 1 times [2023-12-20 20:10:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893439039] [2023-12-20 20:10:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:45,158 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:45,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781346762] [2023-12-20 20:10:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:45,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:45,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:45,159 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 20:10:45,204 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 20:10:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:45,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:10:45,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11343 proven. 204 refuted. 0 times theorem prover too weak. 12433 trivial. 0 not checked. [2023-12-20 20:10:45,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:10:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 123 proven. 204 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-20 20:10:46,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893439039] [2023-12-20 20:10:46,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781346762] [2023-12-20 20:10:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781346762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:10:46,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:10:46,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:10:46,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044014378] [2023-12-20 20:10:46,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:10:46,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:10:46,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:46,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:10:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:10:46,262 INFO L87 Difference]: Start difference. First operand 2711 states and 4608 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-20 20:10:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:46,735 INFO L93 Difference]: Finished difference Result 4209 states and 7131 transitions. [2023-12-20 20:10:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 20:10:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) Word has length 705 [2023-12-20 20:10:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:46,741 INFO L225 Difference]: With dead ends: 4209 [2023-12-20 20:10:46,741 INFO L226 Difference]: Without dead ends: 1499 [2023-12-20 20:10:46,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1402 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:10:46,746 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 283 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:46,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 961 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 20:10:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2023-12-20 20:10:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1483. [2023-12-20 20:10:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1084 states have (on average 1.5830258302583027) internal successors, (1716), 1090 states have internal predecessors, (1716), 386 states have call successors, (386), 12 states have call predecessors, (386), 12 states have return successors, (386), 380 states have call predecessors, (386), 386 states have call successors, (386) [2023-12-20 20:10:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2488 transitions. [2023-12-20 20:10:46,811 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2488 transitions. Word has length 705 [2023-12-20 20:10:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:46,812 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 2488 transitions. [2023-12-20 20:10:46,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (178), 2 states have call predecessors, (178), 4 states have return successors, (179), 2 states have call predecessors, (179), 2 states have call successors, (179) [2023-12-20 20:10:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2488 transitions. [2023-12-20 20:10:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 20:10:46,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:46,817 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:46,825 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 20:10:47,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:47,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:47,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 626180526, now seen corresponding path program 1 times [2023-12-20 20:10:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:47,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551347316] [2023-12-20 20:10:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:47,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:47,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:47,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1294359631] [2023-12-20 20:10:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:47,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:47,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:47,067 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 20:10:47,108 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 20:10:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:47,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:10:47,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11917 proven. 183 refuted. 0 times theorem prover too weak. 11880 trivial. 0 not checked. [2023-12-20 20:10:47,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:10:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 144 proven. 183 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-20 20:10:48,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551347316] [2023-12-20 20:10:48,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:48,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294359631] [2023-12-20 20:10:48,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294359631] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:10:48,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:10:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:10:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778889070] [2023-12-20 20:10:48,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:10:48,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:10:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:10:48,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:10:48,063 INFO L87 Difference]: Start difference. First operand 1483 states and 2488 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (171), 2 states have call predecessors, (171), 4 states have return successors, (172), 2 states have call predecessors, (172), 2 states have call successors, (172) [2023-12-20 20:10:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:48,488 INFO L93 Difference]: Finished difference Result 2993 states and 5001 transitions. [2023-12-20 20:10:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:10:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (171), 2 states have call predecessors, (171), 4 states have return successors, (172), 2 states have call predecessors, (172), 2 states have call successors, (172) Word has length 705 [2023-12-20 20:10:48,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:48,500 INFO L225 Difference]: With dead ends: 2993 [2023-12-20 20:10:48,500 INFO L226 Difference]: Without dead ends: 1511 [2023-12-20 20:10:48,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1402 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:10:48,503 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 538 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:48,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 955 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 20:10:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2023-12-20 20:10:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1491. [2023-12-20 20:10:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1090 states have (on average 1.5761467889908256) internal successors, (1718), 1096 states have internal predecessors, (1718), 386 states have call successors, (386), 14 states have call predecessors, (386), 14 states have return successors, (386), 380 states have call predecessors, (386), 386 states have call successors, (386) [2023-12-20 20:10:48,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2490 transitions. [2023-12-20 20:10:48,569 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2490 transitions. Word has length 705 [2023-12-20 20:10:48,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:48,570 INFO L495 AbstractCegarLoop]: Abstraction has 1491 states and 2490 transitions. [2023-12-20 20:10:48,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (171), 2 states have call predecessors, (171), 4 states have return successors, (172), 2 states have call predecessors, (172), 2 states have call successors, (172) [2023-12-20 20:10:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2490 transitions. [2023-12-20 20:10:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 20:10:48,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:48,575 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:48,582 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 20:10:48,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:48,783 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:48,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash -516321940, now seen corresponding path program 1 times [2023-12-20 20:10:48,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:48,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203983921] [2023-12-20 20:10:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:48,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:48,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325475516] [2023-12-20 20:10:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:48,823 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 20:10:48,825 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 20:10:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:49,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 20:10:49,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-20 20:10:49,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:49,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:49,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203983921] [2023-12-20 20:10:49,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:49,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325475516] [2023-12-20 20:10:49,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325475516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:49,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:49,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 20:10:49,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342653776] [2023-12-20 20:10:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:49,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 20:10:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 20:10:49,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 20:10:49,300 INFO L87 Difference]: Start difference. First operand 1491 states and 2490 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:49,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:49,489 INFO L93 Difference]: Finished difference Result 4451 states and 7416 transitions. [2023-12-20 20:10:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 20:10:49,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 705 [2023-12-20 20:10:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:49,501 INFO L225 Difference]: With dead ends: 4451 [2023-12-20 20:10:49,501 INFO L226 Difference]: Without dead ends: 2961 [2023-12-20 20:10:49,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 703 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 20:10:49,505 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 715 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:49,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1845 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 20:10:49,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2023-12-20 20:10:49,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1527. [2023-12-20 20:10:49,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1124 states have (on average 1.5658362989323844) internal successors, (1760), 1130 states have internal predecessors, (1760), 386 states have call successors, (386), 16 states have call predecessors, (386), 16 states have return successors, (386), 380 states have call predecessors, (386), 386 states have call successors, (386) [2023-12-20 20:10:49,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2532 transitions. [2023-12-20 20:10:49,609 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2532 transitions. Word has length 705 [2023-12-20 20:10:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:49,610 INFO L495 AbstractCegarLoop]: Abstraction has 1527 states and 2532 transitions. [2023-12-20 20:10:49,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2532 transitions. [2023-12-20 20:10:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 20:10:49,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:49,615 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:49,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 20:10:49,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 20:10:49,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:49,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2104669842, now seen corresponding path program 1 times [2023-12-20 20:10:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:49,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929092080] [2023-12-20 20:10:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:49,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:49,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550637965] [2023-12-20 20:10:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:49,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:49,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:49,885 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 20:10:49,896 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 20:10:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:50,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 20:10:50,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 11793 proven. 189 refuted. 0 times theorem prover too weak. 11998 trivial. 0 not checked. [2023-12-20 20:10:50,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 20:10:51,017 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 138 proven. 189 refuted. 0 times theorem prover too weak. 23653 trivial. 0 not checked. [2023-12-20 20:10:51,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:51,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929092080] [2023-12-20 20:10:51,018 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:51,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550637965] [2023-12-20 20:10:51,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550637965] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 20:10:51,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 20:10:51,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-20 20:10:51,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585041357] [2023-12-20 20:10:51,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 20:10:51,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 20:10:51,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 20:10:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 20:10:51,024 INFO L87 Difference]: Start difference. First operand 1527 states and 2532 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (173), 2 states have call predecessors, (173), 4 states have return successors, (174), 2 states have call predecessors, (174), 2 states have call successors, (174) [2023-12-20 20:10:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:51,769 INFO L93 Difference]: Finished difference Result 3089 states and 5097 transitions. [2023-12-20 20:10:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 20:10:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (173), 2 states have call predecessors, (173), 4 states have return successors, (174), 2 states have call predecessors, (174), 2 states have call successors, (174) Word has length 705 [2023-12-20 20:10:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:51,775 INFO L225 Difference]: With dead ends: 3089 [2023-12-20 20:10:51,775 INFO L226 Difference]: Without dead ends: 1563 [2023-12-20 20:10:51,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1402 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-20 20:10:51,779 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 464 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:51,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 946 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 20:10:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2023-12-20 20:10:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1535. [2023-12-20 20:10:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1130 states have (on average 1.5486725663716814) internal successors, (1750), 1136 states have internal predecessors, (1750), 386 states have call successors, (386), 18 states have call predecessors, (386), 18 states have return successors, (386), 380 states have call predecessors, (386), 386 states have call successors, (386) [2023-12-20 20:10:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2522 transitions. [2023-12-20 20:10:51,851 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2522 transitions. Word has length 705 [2023-12-20 20:10:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:51,851 INFO L495 AbstractCegarLoop]: Abstraction has 1535 states and 2522 transitions. [2023-12-20 20:10:51,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 2 states have call successors, (173), 2 states have call predecessors, (173), 4 states have return successors, (174), 2 states have call predecessors, (174), 2 states have call successors, (174) [2023-12-20 20:10:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2522 transitions. [2023-12-20 20:10:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 20:10:51,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:51,857 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:51,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 20:10:52,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:52,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:52,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:52,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2035056398, now seen corresponding path program 1 times [2023-12-20 20:10:52,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:52,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288267559] [2023-12-20 20:10:52,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:52,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:52,113 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:52,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [613587913] [2023-12-20 20:10:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:52,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:52,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:52,120 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 20:10:52,169 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 20:10:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:52,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 20:10:52,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 20:10:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 23980 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2023-12-20 20:10:52,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 20:10:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 20:10:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288267559] [2023-12-20 20:10:52,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 20:10:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613587913] [2023-12-20 20:10:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613587913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 20:10:52,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 20:10:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 20:10:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116180780] [2023-12-20 20:10:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 20:10:52,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 20:10:52,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 20:10:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 20:10:52,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-20 20:10:52,917 INFO L87 Difference]: Start difference. First operand 1535 states and 2522 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 20:10:56,631 INFO L93 Difference]: Finished difference Result 10971 states and 17932 transitions. [2023-12-20 20:10:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 20:10:56,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) Word has length 705 [2023-12-20 20:10:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 20:10:56,688 INFO L225 Difference]: With dead ends: 10971 [2023-12-20 20:10:56,688 INFO L226 Difference]: Without dead ends: 9437 [2023-12-20 20:10:56,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 20:10:56,694 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 6652 mSDsluCounter, 5432 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6652 SdHoareTripleChecker+Valid, 6759 SdHoareTripleChecker+Invalid, 3560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 20:10:56,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6652 Valid, 6759 Invalid, 3560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 20:10:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2023-12-20 20:10:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 6511. [2023-12-20 20:10:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 4894 states have (on average 1.5443400081732734) internal successors, (7558), 4918 states have internal predecessors, (7558), 1544 states have call successors, (1544), 72 states have call predecessors, (1544), 72 states have return successors, (1544), 1520 states have call predecessors, (1544), 1544 states have call successors, (1544) [2023-12-20 20:10:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 10646 transitions. [2023-12-20 20:10:57,138 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 10646 transitions. Word has length 705 [2023-12-20 20:10:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 20:10:57,139 INFO L495 AbstractCegarLoop]: Abstraction has 6511 states and 10646 transitions. [2023-12-20 20:10:57,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 1 states have call successors, (110), 1 states have call predecessors, (110), 1 states have return successors, (110), 1 states have call predecessors, (110), 1 states have call successors, (110) [2023-12-20 20:10:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 10646 transitions. [2023-12-20 20:10:57,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2023-12-20 20:10:57,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 20:10:57,147 INFO L195 NwaCegarLoop]: trace histogram [110, 110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:57,178 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 20:10:57,356 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,SelfDestructingSolverStorable9 [2023-12-20 20:10:57,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 20:10:57,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 20:10:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash 380779952, now seen corresponding path program 1 times [2023-12-20 20:10:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 20:10:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547667855] [2023-12-20 20:10:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 20:10:57,400 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 20:10:57,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503988078] [2023-12-20 20:10:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 20:10:57,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 20:10:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 20:10:57,415 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 20:10:57,439 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 20:10:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 20:10:57,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 20:10:57,821 INFO L285 TraceCheckSpWp]: Computing forward predicates...