/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 15:54:59,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 15:54:59,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 15:54:59,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 15:54:59,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 15:54:59,469 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 15:54:59,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 15:54:59,470 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 15:54:59,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 15:54:59,474 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 15:54:59,474 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 15:54:59,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 15:54:59,475 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 15:54:59,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 15:54:59,476 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 15:54:59,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 15:54:59,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 15:54:59,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 15:54:59,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 15:54:59,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 15:54:59,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 15:54:59,479 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 15:54:59,479 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 15:54:59,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 15:54:59,479 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 15:54:59,479 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 15:54:59,480 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 15:54:59,480 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 15:54:59,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 15:54:59,481 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 15:54:59,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 15:54:59,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 15:54:59,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:54:59,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 15:54:59,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 15:54:59,482 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 15:54:59,482 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 15:54:59,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 15:54:59,483 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 15:54:59,483 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 15:54:59,483 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 15:54:59,483 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 15:54:59,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 15:54:59,483 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 15:54:59,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 15:54:59,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 15:54:59,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 15:54:59,732 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 15:54:59,732 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 15:54:59,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-89.i [2023-12-19 15:55:00,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 15:55:01,049 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 15:55:01,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-89.i [2023-12-19 15:55:01,059 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/284bd6ceb/9a75bb8c6f014f0db3d3d15c7847cd0f/FLAG3a5155c8a [2023-12-19 15:55:01,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/284bd6ceb/9a75bb8c6f014f0db3d3d15c7847cd0f [2023-12-19 15:55:01,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 15:55:01,074 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 15:55:01,076 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 15:55:01,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 15:55:01,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 15:55:01,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc5a040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01, skipping insertion in model container [2023-12-19 15:55:01,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 15:55:01,237 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_variablewrapping_wrapper-s_file-89.i[916,929] [2023-12-19 15:55:01,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:55:01,302 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 15:55:01,310 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_variablewrapping_wrapper-s_file-89.i[916,929] [2023-12-19 15:55:01,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 15:55:01,352 INFO L206 MainTranslator]: Completed translation [2023-12-19 15:55:01,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01 WrapperNode [2023-12-19 15:55:01,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 15:55:01,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 15:55:01,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 15:55:01,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 15:55:01,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,408 INFO L138 Inliner]: procedures = 26, calls = 132, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 436 [2023-12-19 15:55:01,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 15:55:01,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 15:55:01,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 15:55:01,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 15:55:01,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,440 INFO L175 MemorySlicer]: Split 107 memory accesses to 2 slices as follows [2, 105]. 98 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 12]. The 15 writes are split as follows [0, 15]. [2023-12-19 15:55:01,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 15:55:01,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 15:55:01,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 15:55:01,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 15:55:01,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (1/1) ... [2023-12-19 15:55:01,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 15:55:01,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:01,525 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) [2023-12-19 15:55:01,526 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 [2023-12-19 15:55:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 15:55:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 15:55:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 15:55:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-19 15:55:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-19 15:55:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 15:55:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 15:55:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 15:55:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 15:55:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 15:55:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 15:55:01,638 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 15:55:01,641 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 15:55:02,095 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 15:55:02,129 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 15:55:02,129 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 15:55:02,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:55:02 BoogieIcfgContainer [2023-12-19 15:55:02,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 15:55:02,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 15:55:02,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 15:55:02,135 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 15:55:02,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:55:01" (1/3) ... [2023-12-19 15:55:02,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0ce12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:55:02, skipping insertion in model container [2023-12-19 15:55:02,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:55:01" (2/3) ... [2023-12-19 15:55:02,137 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0ce12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:55:02, skipping insertion in model container [2023-12-19 15:55:02,137 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:55:02" (3/3) ... [2023-12-19 15:55:02,138 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-89.i [2023-12-19 15:55:02,149 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 15:55:02,150 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 15:55:02,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 15:55:02,191 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;@7f210d26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 15:55:02,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 15:55:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 78 states have internal predecessors, (115), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 15:55:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:02,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:02,207 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:02,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:02,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1885799029, now seen corresponding path program 1 times [2023-12-19 15:55:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:02,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52538114] [2023-12-19 15:55:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:02,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52538114] [2023-12-19 15:55:02,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 15:55:02,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576511473] [2023-12-19 15:55:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:02,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:02,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:02,392 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) [2023-12-19 15:55:02,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 15:55:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:02,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 15:55:02,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-19 15:55:02,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:02,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576511473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:02,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:02,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 15:55:02,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799086710] [2023-12-19 15:55:02,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:02,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 15:55:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 15:55:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:55:02,678 INFO L87 Difference]: Start difference. First operand has 93 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 78 states have internal predecessors, (115), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 15:55:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:02,716 INFO L93 Difference]: Finished difference Result 183 states and 293 transitions. [2023-12-19 15:55:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 15:55:02,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-12-19 15:55:02,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:02,724 INFO L225 Difference]: With dead ends: 183 [2023-12-19 15:55:02,724 INFO L226 Difference]: Without dead ends: 91 [2023-12-19 15:55:02,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 15:55:02,729 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:02,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:55:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-19 15:55:02,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-19 15:55:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 76 states have internal predecessors, (108), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 15:55:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 134 transitions. [2023-12-19 15:55:02,762 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 134 transitions. Word has length 104 [2023-12-19 15:55:02,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:02,763 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 134 transitions. [2023-12-19 15:55:02,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-19 15:55:02,763 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 134 transitions. [2023-12-19 15:55:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:02,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:02,767 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:02,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:02,972 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 [2023-12-19 15:55:02,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:02,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1483406799, now seen corresponding path program 1 times [2023-12-19 15:55:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:02,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836508728] [2023-12-19 15:55:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:02,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:03,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:03,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981848880] [2023-12-19 15:55:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:03,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:03,057 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) [2023-12-19 15:55:03,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 15:55:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:03,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 15:55:03,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:03,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836508728] [2023-12-19 15:55:03,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:03,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981848880] [2023-12-19 15:55:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981848880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:03,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:55:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001258267] [2023-12-19 15:55:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:03,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:55:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:03,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:55:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:55:03,290 INFO L87 Difference]: Start difference. First operand 91 states and 134 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:03,370 INFO L93 Difference]: Finished difference Result 193 states and 284 transitions. [2023-12-19 15:55:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:55:03,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:03,375 INFO L225 Difference]: With dead ends: 193 [2023-12-19 15:55:03,376 INFO L226 Difference]: Without dead ends: 103 [2023-12-19 15:55:03,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:03,381 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 21 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:03,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 381 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:55:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-19 15:55:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 93. [2023-12-19 15:55:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 15:55:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2023-12-19 15:55:03,398 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 104 [2023-12-19 15:55:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:03,400 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2023-12-19 15:55:03,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2023-12-19 15:55:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:03,402 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:03,402 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:03,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:03,609 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 [2023-12-19 15:55:03,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:03,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2002213871, now seen corresponding path program 1 times [2023-12-19 15:55:03,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:03,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170482506] [2023-12-19 15:55:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:03,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:03,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:03,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395413662] [2023-12-19 15:55:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:03,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:03,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:03,676 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) [2023-12-19 15:55:03,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 15:55:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:03,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 15:55:03,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:03,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:03,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170482506] [2023-12-19 15:55:03,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:03,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395413662] [2023-12-19 15:55:03,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395413662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:03,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:03,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:55:03,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077838013] [2023-12-19 15:55:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:55:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:03,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:55:03,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:55:03,852 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:03,897 INFO L93 Difference]: Finished difference Result 193 states and 282 transitions. [2023-12-19 15:55:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:55:03,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:03,901 INFO L225 Difference]: With dead ends: 193 [2023-12-19 15:55:03,901 INFO L226 Difference]: Without dead ends: 101 [2023-12-19 15:55:03,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:03,905 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 12 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:03,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 379 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:55:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-19 15:55:03,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2023-12-19 15:55:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 80 states have (on average 1.4) internal successors, (112), 80 states have internal predecessors, (112), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 15:55:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 138 transitions. [2023-12-19 15:55:03,919 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 138 transitions. Word has length 104 [2023-12-19 15:55:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:03,920 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 138 transitions. [2023-12-19 15:55:03,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 138 transitions. [2023-12-19 15:55:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:03,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:03,922 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:03,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:04,128 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 [2023-12-19 15:55:04,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:04,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:04,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2059472173, now seen corresponding path program 1 times [2023-12-19 15:55:04,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:04,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713873988] [2023-12-19 15:55:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:04,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:04,175 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:04,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372666221] [2023-12-19 15:55:04,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:04,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:04,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:04,180 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) [2023-12-19 15:55:04,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 15:55:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:04,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 15:55:04,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:04,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 48 [2023-12-19 15:55:04,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 66 [2023-12-19 15:55:04,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:04,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2023-12-19 15:55:04,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:04,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 75 [2023-12-19 15:55:04,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:04,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 49 [2023-12-19 15:55:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:04,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713873988] [2023-12-19 15:55:05,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:05,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372666221] [2023-12-19 15:55:05,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372666221] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:05,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:05,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 15 [2023-12-19 15:55:05,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865887410] [2023-12-19 15:55:05,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:05,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:55:05,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:05,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:55:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:55:05,088 INFO L87 Difference]: Start difference. First operand 95 states and 138 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:05,726 INFO L93 Difference]: Finished difference Result 330 states and 478 transitions. [2023-12-19 15:55:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:55:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:05,728 INFO L225 Difference]: With dead ends: 330 [2023-12-19 15:55:05,728 INFO L226 Difference]: Without dead ends: 236 [2023-12-19 15:55:05,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:55:05,729 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 305 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:05,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 615 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:55:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-19 15:55:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 169. [2023-12-19 15:55:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 146 states have (on average 1.404109589041096) internal successors, (205), 147 states have internal predecessors, (205), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-19 15:55:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 245 transitions. [2023-12-19 15:55:05,744 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 245 transitions. Word has length 104 [2023-12-19 15:55:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:05,744 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 245 transitions. [2023-12-19 15:55:05,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 245 transitions. [2023-12-19 15:55:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:05,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:05,746 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:05,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 15:55:05,958 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 [2023-12-19 15:55:05,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:05,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash 779608495, now seen corresponding path program 1 times [2023-12-19 15:55:05,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:05,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154060900] [2023-12-19 15:55:05,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:05,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:06,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850843897] [2023-12-19 15:55:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:06,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:06,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:06,015 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) [2023-12-19 15:55:06,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 15:55:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:06,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:06,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:06,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2023-12-19 15:55:06,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 55 [2023-12-19 15:55:06,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-12-19 15:55:06,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:06,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 76 [2023-12-19 15:55:06,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:06,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 103 treesize of output 47 [2023-12-19 15:55:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:06,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154060900] [2023-12-19 15:55:06,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:06,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850843897] [2023-12-19 15:55:06,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850843897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:06,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:06,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:55:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959197428] [2023-12-19 15:55:06,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:06,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:55:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:55:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:06,375 INFO L87 Difference]: Start difference. First operand 169 states and 245 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:06,642 INFO L93 Difference]: Finished difference Result 349 states and 502 transitions. [2023-12-19 15:55:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:55:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:06,646 INFO L225 Difference]: With dead ends: 349 [2023-12-19 15:55:06,646 INFO L226 Difference]: Without dead ends: 181 [2023-12-19 15:55:06,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:55:06,647 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 224 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:06,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 368 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-19 15:55:06,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2023-12-19 15:55:06,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 151 states have (on average 1.3841059602649006) internal successors, (209), 153 states have internal predecessors, (209), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:55:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 255 transitions. [2023-12-19 15:55:06,673 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 255 transitions. Word has length 104 [2023-12-19 15:55:06,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:06,674 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 255 transitions. [2023-12-19 15:55:06,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:06,674 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 255 transitions. [2023-12-19 15:55:06,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:06,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:06,678 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:06,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:06,885 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 [2023-12-19 15:55:06,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:06,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1931308406, now seen corresponding path program 1 times [2023-12-19 15:55:06,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:06,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920046523] [2023-12-19 15:55:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:06,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:06,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351985224] [2023-12-19 15:55:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:06,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:06,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:06,928 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) [2023-12-19 15:55:06,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 15:55:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:07,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 15:55:07,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:07,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 48 [2023-12-19 15:55:07,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:07,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 76 [2023-12-19 15:55:07,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:07,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 42 [2023-12-19 15:55:07,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:07,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 90 [2023-12-19 15:55:07,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:07,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 139 treesize of output 53 [2023-12-19 15:55:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:07,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:07,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920046523] [2023-12-19 15:55:07,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351985224] [2023-12-19 15:55:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351985224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:07,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:07,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:55:07,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419099490] [2023-12-19 15:55:07,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:07,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:55:07,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:07,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:55:07,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:07,286 INFO L87 Difference]: Start difference. First operand 178 states and 255 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:07,592 INFO L93 Difference]: Finished difference Result 398 states and 572 transitions. [2023-12-19 15:55:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:55:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:07,594 INFO L225 Difference]: With dead ends: 398 [2023-12-19 15:55:07,594 INFO L226 Difference]: Without dead ends: 227 [2023-12-19 15:55:07,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:55:07,596 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 182 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:07,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 366 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:07,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-19 15:55:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 187. [2023-12-19 15:55:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 160 states have (on average 1.39375) internal successors, (223), 162 states have internal predecessors, (223), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:55:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 269 transitions. [2023-12-19 15:55:07,606 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 269 transitions. Word has length 104 [2023-12-19 15:55:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:07,607 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 269 transitions. [2023-12-19 15:55:07,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 269 transitions. [2023-12-19 15:55:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:07,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:07,608 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:07,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:07,816 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 [2023-12-19 15:55:07,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:07,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1812793297, now seen corresponding path program 1 times [2023-12-19 15:55:07,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:07,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949796938] [2023-12-19 15:55:07,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:07,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:07,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:07,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468686743] [2023-12-19 15:55:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:07,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:07,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:07,840 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) [2023-12-19 15:55:07,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 15:55:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:07,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:07,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:08,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-12-19 15:55:08,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:08,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 63 [2023-12-19 15:55:08,073 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:08,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:08,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949796938] [2023-12-19 15:55:08,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468686743] [2023-12-19 15:55:08,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468686743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:08,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:08,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:55:08,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926250530] [2023-12-19 15:55:08,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:08,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:55:08,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:55:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:08,075 INFO L87 Difference]: Start difference. First operand 187 states and 269 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:08,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:08,439 INFO L93 Difference]: Finished difference Result 456 states and 649 transitions. [2023-12-19 15:55:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:55:08,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:08,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:08,442 INFO L225 Difference]: With dead ends: 456 [2023-12-19 15:55:08,442 INFO L226 Difference]: Without dead ends: 276 [2023-12-19 15:55:08,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:55:08,443 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 165 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:08,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 540 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:08,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-12-19 15:55:08,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 228. [2023-12-19 15:55:08,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 200 states have (on average 1.395) internal successors, (279), 202 states have internal predecessors, (279), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-19 15:55:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 325 transitions. [2023-12-19 15:55:08,461 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 325 transitions. Word has length 104 [2023-12-19 15:55:08,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:08,461 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 325 transitions. [2023-12-19 15:55:08,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:08,462 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 325 transitions. [2023-12-19 15:55:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:08,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:08,464 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:08,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:08,670 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 [2023-12-19 15:55:08,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:08,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1202310321, now seen corresponding path program 1 times [2023-12-19 15:55:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:08,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447713700] [2023-12-19 15:55:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:08,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:08,691 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:08,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50728910] [2023-12-19 15:55:08,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:08,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:08,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:08,693 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) [2023-12-19 15:55:08,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 15:55:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:08,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 15:55:08,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:08,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:55:08,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:08,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 49 [2023-12-19 15:55:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:08,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:09,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-12-19 15:55:09,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:09,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 36 [2023-12-19 15:55:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:09,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447713700] [2023-12-19 15:55:09,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:09,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50728910] [2023-12-19 15:55:09,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50728910] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:09,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 15 [2023-12-19 15:55:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521003118] [2023-12-19 15:55:09,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:09,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:55:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:55:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:55:09,061 INFO L87 Difference]: Start difference. First operand 228 states and 325 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:09,399 INFO L93 Difference]: Finished difference Result 514 states and 726 transitions. [2023-12-19 15:55:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:55:09,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:09,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:09,401 INFO L225 Difference]: With dead ends: 514 [2023-12-19 15:55:09,401 INFO L226 Difference]: Without dead ends: 287 [2023-12-19 15:55:09,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-19 15:55:09,403 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 245 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:09,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 843 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-19 15:55:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 274. [2023-12-19 15:55:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 226 states have (on average 1.345132743362832) internal successors, (304), 229 states have internal predecessors, (304), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-19 15:55:09,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 384 transitions. [2023-12-19 15:55:09,417 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 384 transitions. Word has length 104 [2023-12-19 15:55:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:09,418 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 384 transitions. [2023-12-19 15:55:09,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 384 transitions. [2023-12-19 15:55:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:09,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:09,419 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:09,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:09,627 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 [2023-12-19 15:55:09,627 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:09,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1127103928, now seen corresponding path program 1 times [2023-12-19 15:55:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487943411] [2023-12-19 15:55:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:09,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:09,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [190629720] [2023-12-19 15:55:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:09,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:09,649 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) [2023-12-19 15:55:09,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 15:55:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:09,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:09,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:09,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-19 15:55:09,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:09,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2023-12-19 15:55:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:09,859 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:09,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:09,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487943411] [2023-12-19 15:55:09,859 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190629720] [2023-12-19 15:55:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190629720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:09,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:09,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:55:09,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127117111] [2023-12-19 15:55:09,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:09,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:55:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:55:09,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:09,861 INFO L87 Difference]: Start difference. First operand 274 states and 384 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:10,185 INFO L93 Difference]: Finished difference Result 658 states and 931 transitions. [2023-12-19 15:55:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:55:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:10,187 INFO L225 Difference]: With dead ends: 658 [2023-12-19 15:55:10,187 INFO L226 Difference]: Without dead ends: 407 [2023-12-19 15:55:10,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:55:10,189 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 204 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:10,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 542 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-19 15:55:10,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 337. [2023-12-19 15:55:10,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 285 states have (on average 1.3649122807017544) internal successors, (389), 289 states have internal predecessors, (389), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 39 states have call predecessors, (43), 43 states have call successors, (43) [2023-12-19 15:55:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 475 transitions. [2023-12-19 15:55:10,205 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 475 transitions. Word has length 104 [2023-12-19 15:55:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:10,205 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 475 transitions. [2023-12-19 15:55:10,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 475 transitions. [2023-12-19 15:55:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:10,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:10,207 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:10,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:10,414 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 [2023-12-19 15:55:10,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:10,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash -152759750, now seen corresponding path program 1 times [2023-12-19 15:55:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247431180] [2023-12-19 15:55:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:10,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:10,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:10,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786483244] [2023-12-19 15:55:10,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:10,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:10,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:10,433 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) [2023-12-19 15:55:10,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 15:55:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:10,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 15:55:10,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:10,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:55:10,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:10,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 49 [2023-12-19 15:55:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:10,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:10,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:10,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247431180] [2023-12-19 15:55:10,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:10,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786483244] [2023-12-19 15:55:10,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786483244] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:10,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:10,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 15 [2023-12-19 15:55:10,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305183086] [2023-12-19 15:55:10,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:10,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:55:10,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:10,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:55:10,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:55:10,817 INFO L87 Difference]: Start difference. First operand 337 states and 475 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:11,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:11,215 INFO L93 Difference]: Finished difference Result 738 states and 1042 transitions. [2023-12-19 15:55:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:55:11,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:11,218 INFO L225 Difference]: With dead ends: 738 [2023-12-19 15:55:11,218 INFO L226 Difference]: Without dead ends: 424 [2023-12-19 15:55:11,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:55:11,220 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 258 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:11,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 753 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-19 15:55:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 308. [2023-12-19 15:55:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 253 states have (on average 1.3517786561264822) internal successors, (342), 256 states have internal predecessors, (342), 46 states have call successors, (46), 8 states have call predecessors, (46), 8 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 434 transitions. [2023-12-19 15:55:11,237 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 434 transitions. Word has length 104 [2023-12-19 15:55:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:11,238 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 434 transitions. [2023-12-19 15:55:11,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:11,238 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 434 transitions. [2023-12-19 15:55:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:11,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:11,239 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:11,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:11,445 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 [2023-12-19 15:55:11,446 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:11,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash 998940161, now seen corresponding path program 1 times [2023-12-19 15:55:11,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:11,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103883121] [2023-12-19 15:55:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:11,462 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804273200] [2023-12-19 15:55:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:11,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:11,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:11,463 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) [2023-12-19 15:55:11,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 15:55:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:11,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:11,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:11,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-19 15:55:11,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:11,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 53 [2023-12-19 15:55:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:11,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103883121] [2023-12-19 15:55:11,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:11,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804273200] [2023-12-19 15:55:11,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804273200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:11,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:11,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:55:11,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934347228] [2023-12-19 15:55:11,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:55:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:55:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:11,693 INFO L87 Difference]: Start difference. First operand 308 states and 434 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:11,963 INFO L93 Difference]: Finished difference Result 692 states and 979 transitions. [2023-12-19 15:55:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:55:11,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:11,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:11,966 INFO L225 Difference]: With dead ends: 692 [2023-12-19 15:55:11,966 INFO L226 Difference]: Without dead ends: 423 [2023-12-19 15:55:11,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:55:11,967 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 307 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:11,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 483 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-12-19 15:55:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 308. [2023-12-19 15:55:11,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 253 states have (on average 1.3478260869565217) internal successors, (341), 256 states have internal predecessors, (341), 46 states have call successors, (46), 8 states have call predecessors, (46), 8 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 433 transitions. [2023-12-19 15:55:11,983 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 433 transitions. Word has length 104 [2023-12-19 15:55:11,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:11,983 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 433 transitions. [2023-12-19 15:55:11,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:11,983 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 433 transitions. [2023-12-19 15:55:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:11,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:11,984 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:11,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:12,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 15:55:12,193 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:12,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:12,193 INFO L85 PathProgramCache]: Analyzing trace with hash -280923517, now seen corresponding path program 1 times [2023-12-19 15:55:12,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:12,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957369490] [2023-12-19 15:55:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:12,209 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:12,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604787905] [2023-12-19 15:55:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:12,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:12,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:12,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:12,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 15:55:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:12,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 15:55:12,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:12,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-19 15:55:12,454 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:12,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 49 [2023-12-19 15:55:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:12,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:12,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:12,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957369490] [2023-12-19 15:55:12,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:12,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604787905] [2023-12-19 15:55:12,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604787905] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:12,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:12,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 15 [2023-12-19 15:55:12,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171793856] [2023-12-19 15:55:12,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:12,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:55:12,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:12,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:55:12,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:55:12,632 INFO L87 Difference]: Start difference. First operand 308 states and 433 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:13,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:13,008 INFO L93 Difference]: Finished difference Result 693 states and 977 transitions. [2023-12-19 15:55:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 15:55:13,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:13,011 INFO L225 Difference]: With dead ends: 693 [2023-12-19 15:55:13,011 INFO L226 Difference]: Without dead ends: 424 [2023-12-19 15:55:13,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-12-19 15:55:13,012 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 248 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:13,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1002 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-12-19 15:55:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 306. [2023-12-19 15:55:13,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 251 states have (on average 1.346613545816733) internal successors, (338), 254 states have internal predecessors, (338), 46 states have call successors, (46), 8 states have call predecessors, (46), 8 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 430 transitions. [2023-12-19 15:55:13,027 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 430 transitions. Word has length 104 [2023-12-19 15:55:13,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:13,028 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 430 transitions. [2023-12-19 15:55:13,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:13,028 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 430 transitions. [2023-12-19 15:55:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:13,029 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:13,029 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:13,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:13,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 15:55:13,236 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:13,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:13,237 INFO L85 PathProgramCache]: Analyzing trace with hash 704402102, now seen corresponding path program 1 times [2023-12-19 15:55:13,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:13,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036903522] [2023-12-19 15:55:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:13,269 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:13,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923064370] [2023-12-19 15:55:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:13,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:13,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:13,271 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:13,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 15:55:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:13,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 15:55:13,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:13,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:13,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 30 [2023-12-19 15:55:13,451 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:13,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 59 [2023-12-19 15:55:13,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:13,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 29 [2023-12-19 15:55:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:13,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:13,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:13,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036903522] [2023-12-19 15:55:13,506 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:13,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923064370] [2023-12-19 15:55:13,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923064370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:13,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:13,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:55:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490822051] [2023-12-19 15:55:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:13,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:55:13,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:55:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:13,509 INFO L87 Difference]: Start difference. First operand 306 states and 430 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:13,769 INFO L93 Difference]: Finished difference Result 609 states and 860 transitions. [2023-12-19 15:55:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:13,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:13,772 INFO L225 Difference]: With dead ends: 609 [2023-12-19 15:55:13,772 INFO L226 Difference]: Without dead ends: 342 [2023-12-19 15:55:13,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:13,773 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 182 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:13,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 419 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-19 15:55:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 304. [2023-12-19 15:55:13,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 249 states have (on average 1.3373493975903614) internal successors, (333), 252 states have internal predecessors, (333), 46 states have call successors, (46), 8 states have call predecessors, (46), 8 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:13,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 425 transitions. [2023-12-19 15:55:13,786 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 425 transitions. Word has length 104 [2023-12-19 15:55:13,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:13,787 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 425 transitions. [2023-12-19 15:55:13,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:13,787 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 425 transitions. [2023-12-19 15:55:13,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:13,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:13,788 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:13,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:13,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 15:55:13,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:13,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash 576238335, now seen corresponding path program 1 times [2023-12-19 15:55:13,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:13,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296997638] [2023-12-19 15:55:13,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:13,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:14,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:14,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672268920] [2023-12-19 15:55:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:14,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:14,014 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:14,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 15:55:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:14,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-19 15:55:14,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:14,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2023-12-19 15:55:14,208 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:14,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 75 [2023-12-19 15:55:14,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:14,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 49 [2023-12-19 15:55:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:14,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:14,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:14,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296997638] [2023-12-19 15:55:14,539 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:14,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672268920] [2023-12-19 15:55:14,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672268920] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:14,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:14,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 15 [2023-12-19 15:55:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314284903] [2023-12-19 15:55:14,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:14,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:55:14,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:14,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:55:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:55:14,541 INFO L87 Difference]: Start difference. First operand 304 states and 425 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:15,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:15,080 INFO L93 Difference]: Finished difference Result 609 states and 854 transitions. [2023-12-19 15:55:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:55:15,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:15,082 INFO L225 Difference]: With dead ends: 609 [2023-12-19 15:55:15,082 INFO L226 Difference]: Without dead ends: 344 [2023-12-19 15:55:15,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-19 15:55:15,084 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 236 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:15,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 872 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:55:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-12-19 15:55:15,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 311. [2023-12-19 15:55:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 255 states have (on average 1.3294117647058823) internal successors, (339), 258 states have internal predecessors, (339), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 431 transitions. [2023-12-19 15:55:15,100 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 431 transitions. Word has length 104 [2023-12-19 15:55:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:15,101 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 431 transitions. [2023-12-19 15:55:15,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 431 transitions. [2023-12-19 15:55:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 15:55:15,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:15,102 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:15,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:15,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:15,309 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:15,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash -703625343, now seen corresponding path program 1 times [2023-12-19 15:55:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332098448] [2023-12-19 15:55:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:15,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:15,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067760324] [2023-12-19 15:55:15,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:15,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:15,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:15,334 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:15,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 15:55:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:15,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:15,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:15,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-12-19 15:55:15,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:15,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 54 [2023-12-19 15:55:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:15,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:15,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:15,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332098448] [2023-12-19 15:55:15,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067760324] [2023-12-19 15:55:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067760324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:55:15,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747004720] [2023-12-19 15:55:15,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:15,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:55:15,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:15,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:55:15,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:15,562 INFO L87 Difference]: Start difference. First operand 311 states and 431 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:15,835 INFO L93 Difference]: Finished difference Result 586 states and 813 transitions. [2023-12-19 15:55:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-12-19 15:55:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:15,837 INFO L225 Difference]: With dead ends: 586 [2023-12-19 15:55:15,837 INFO L226 Difference]: Without dead ends: 314 [2023-12-19 15:55:15,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:15,838 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 76 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:15,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 617 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-19 15:55:15,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2023-12-19 15:55:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 255 states have (on average 1.3215686274509804) internal successors, (337), 258 states have internal predecessors, (337), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 429 transitions. [2023-12-19 15:55:15,851 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 429 transitions. Word has length 104 [2023-12-19 15:55:15,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:15,852 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 429 transitions. [2023-12-19 15:55:15,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 429 transitions. [2023-12-19 15:55:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-19 15:55:15,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:15,853 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:15,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:16,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 15:55:16,060 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:16,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:16,061 INFO L85 PathProgramCache]: Analyzing trace with hash -805615109, now seen corresponding path program 1 times [2023-12-19 15:55:16,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:16,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509054562] [2023-12-19 15:55:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:16,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:16,075 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:16,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018816264] [2023-12-19 15:55:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:16,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:16,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:16,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:16,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 15:55:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:16,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 15:55:16,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:16,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509054562] [2023-12-19 15:55:16,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018816264] [2023-12-19 15:55:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018816264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:16,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210845655] [2023-12-19 15:55:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:16,233 INFO L87 Difference]: Start difference. First operand 312 states and 429 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:16,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:16,271 INFO L93 Difference]: Finished difference Result 663 states and 923 transitions. [2023-12-19 15:55:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 106 [2023-12-19 15:55:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:16,273 INFO L225 Difference]: With dead ends: 663 [2023-12-19 15:55:16,273 INFO L226 Difference]: Without dead ends: 390 [2023-12-19 15:55:16,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:16,275 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 115 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:16,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 471 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:55:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-19 15:55:16,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 321. [2023-12-19 15:55:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 264 states have (on average 1.3106060606060606) internal successors, (346), 267 states have internal predecessors, (346), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 438 transitions. [2023-12-19 15:55:16,290 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 438 transitions. Word has length 106 [2023-12-19 15:55:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:16,290 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 438 transitions. [2023-12-19 15:55:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:16,290 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 438 transitions. [2023-12-19 15:55:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 15:55:16,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:16,292 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:16,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:16,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 15:55:16,499 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:16,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1435147176, now seen corresponding path program 1 times [2023-12-19 15:55:16,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:16,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852574447] [2023-12-19 15:55:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:16,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:16,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120228186] [2023-12-19 15:55:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:16,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:16,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:16,522 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:16,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-19 15:55:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:16,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 15:55:16,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:16,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-19 15:55:16,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 34 [2023-12-19 15:55:16,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:16,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 66 [2023-12-19 15:55:16,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:16,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 32 [2023-12-19 15:55:16,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:16,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 79 [2023-12-19 15:55:17,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:17,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 125 treesize of output 45 [2023-12-19 15:55:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:17,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:17,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:17,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852574447] [2023-12-19 15:55:17,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:17,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120228186] [2023-12-19 15:55:17,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120228186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:17,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:17,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:55:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397557047] [2023-12-19 15:55:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:55:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:55:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:17,035 INFO L87 Difference]: Start difference. First operand 321 states and 438 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:17,353 INFO L93 Difference]: Finished difference Result 627 states and 859 transitions. [2023-12-19 15:55:17,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:55:17,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 108 [2023-12-19 15:55:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:17,356 INFO L225 Difference]: With dead ends: 627 [2023-12-19 15:55:17,356 INFO L226 Difference]: Without dead ends: 345 [2023-12-19 15:55:17,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:55:17,357 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 111 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 469 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-12-19 15:55:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 327. [2023-12-19 15:55:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 270 states have (on average 1.3037037037037038) internal successors, (352), 273 states have internal predecessors, (352), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 444 transitions. [2023-12-19 15:55:17,373 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 444 transitions. Word has length 108 [2023-12-19 15:55:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:17,374 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 444 transitions. [2023-12-19 15:55:17,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 444 transitions. [2023-12-19 15:55:17,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 15:55:17,375 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:17,375 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:17,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:17,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 15:55:17,582 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:17,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1435206758, now seen corresponding path program 1 times [2023-12-19 15:55:17,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603232963] [2023-12-19 15:55:17,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:17,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:17,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202897648] [2023-12-19 15:55:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:17,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:17,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:17,598 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:17,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-19 15:55:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:17,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-19 15:55:17,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:18,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-19 15:55:18,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-19 15:55:18,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-19 15:55:18,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-19 15:55:18,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2023-12-19 15:55:18,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:18,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-12-19 15:55:18,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 38 [2023-12-19 15:55:18,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 74 [2023-12-19 15:55:18,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 41 [2023-12-19 15:55:18,296 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:18,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 21 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 79 [2023-12-19 15:55:18,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:18,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 121 treesize of output 57 [2023-12-19 15:55:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-12-19 15:55:18,810 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:18,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603232963] [2023-12-19 15:55:18,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:18,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202897648] [2023-12-19 15:55:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202897648] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:18,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:18,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2023-12-19 15:55:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322253311] [2023-12-19 15:55:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:18,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:55:18,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:18,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:55:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-12-19 15:55:18,950 INFO L87 Difference]: Start difference. First operand 327 states and 444 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:19,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:19,112 INFO L93 Difference]: Finished difference Result 335 states and 454 transitions. [2023-12-19 15:55:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:55:19,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 108 [2023-12-19 15:55:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:19,114 INFO L225 Difference]: With dead ends: 335 [2023-12-19 15:55:19,114 INFO L226 Difference]: Without dead ends: 333 [2023-12-19 15:55:19,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-12-19 15:55:19,115 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 115 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:19,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 389 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:55:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-19 15:55:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2023-12-19 15:55:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 276 states have (on average 1.2971014492753623) internal successors, (358), 279 states have internal predecessors, (358), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 450 transitions. [2023-12-19 15:55:19,132 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 450 transitions. Word has length 108 [2023-12-19 15:55:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:19,133 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 450 transitions. [2023-12-19 15:55:19,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:19,133 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 450 transitions. [2023-12-19 15:55:19,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 15:55:19,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:19,134 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:19,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-19 15:55:19,342 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:19,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1377888874, now seen corresponding path program 1 times [2023-12-19 15:55:19,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310110477] [2023-12-19 15:55:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:19,366 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026208807] [2023-12-19 15:55:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:19,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:19,368 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:19,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-19 15:55:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:19,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 15:55:19,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:19,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:19,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 39 [2023-12-19 15:55:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:19,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:19,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310110477] [2023-12-19 15:55:19,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026208807] [2023-12-19 15:55:19,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026208807] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:19,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:19,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:19,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879610903] [2023-12-19 15:55:19,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:19,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:19,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:19,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:19,628 INFO L87 Difference]: Start difference. First operand 333 states and 450 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:19,777 INFO L93 Difference]: Finished difference Result 630 states and 854 transitions. [2023-12-19 15:55:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:55:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 108 [2023-12-19 15:55:19,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:19,781 INFO L225 Difference]: With dead ends: 630 [2023-12-19 15:55:19,781 INFO L226 Difference]: Without dead ends: 336 [2023-12-19 15:55:19,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:19,782 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 65 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:19,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 325 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 15:55:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-12-19 15:55:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 333. [2023-12-19 15:55:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 276 states have (on average 1.286231884057971) internal successors, (355), 279 states have internal predecessors, (355), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 447 transitions. [2023-12-19 15:55:19,799 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 447 transitions. Word has length 108 [2023-12-19 15:55:19,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:19,799 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 447 transitions. [2023-12-19 15:55:19,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 447 transitions. [2023-12-19 15:55:19,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 15:55:19,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:19,801 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:19,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:20,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:20,008 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:20,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2107731796, now seen corresponding path program 1 times [2023-12-19 15:55:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038191896] [2023-12-19 15:55:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:20,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:20,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19118580] [2023-12-19 15:55:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:20,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:20,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:20,040 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:20,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-19 15:55:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:20,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 15:55:20,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:20,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:20,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038191896] [2023-12-19 15:55:20,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19118580] [2023-12-19 15:55:20,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19118580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:20,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:20,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:20,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991597425] [2023-12-19 15:55:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:20,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:20,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:20,205 INFO L87 Difference]: Start difference. First operand 333 states and 447 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:20,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:20,238 INFO L93 Difference]: Finished difference Result 651 states and 872 transitions. [2023-12-19 15:55:20,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:55:20,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 108 [2023-12-19 15:55:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:20,240 INFO L225 Difference]: With dead ends: 651 [2023-12-19 15:55:20,240 INFO L226 Difference]: Without dead ends: 357 [2023-12-19 15:55:20,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:20,241 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 34 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:20,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 476 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:55:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-19 15:55:20,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 342. [2023-12-19 15:55:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 285 states have (on average 1.2771929824561403) internal successors, (364), 288 states have internal predecessors, (364), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 456 transitions. [2023-12-19 15:55:20,259 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 456 transitions. Word has length 108 [2023-12-19 15:55:20,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:20,259 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 456 transitions. [2023-12-19 15:55:20,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 456 transitions. [2023-12-19 15:55:20,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-19 15:55:20,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:20,261 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:20,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:20,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:20,468 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:20,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash -926216458, now seen corresponding path program 1 times [2023-12-19 15:55:20,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:20,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445788395] [2023-12-19 15:55:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:20,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:20,483 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:20,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165572335] [2023-12-19 15:55:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:20,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:20,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:20,485 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:20,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-19 15:55:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:20,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 15:55:20,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:20,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:20,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445788395] [2023-12-19 15:55:20,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165572335] [2023-12-19 15:55:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165572335] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:20,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 15:55:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446641733] [2023-12-19 15:55:20,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 15:55:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 15:55:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 15:55:20,660 INFO L87 Difference]: Start difference. First operand 342 states and 456 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:20,691 INFO L93 Difference]: Finished difference Result 823 states and 1111 transitions. [2023-12-19 15:55:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 15:55:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 108 [2023-12-19 15:55:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:20,694 INFO L225 Difference]: With dead ends: 823 [2023-12-19 15:55:20,694 INFO L226 Difference]: Without dead ends: 520 [2023-12-19 15:55:20,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:20,695 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 128 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:20,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 354 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:55:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-19 15:55:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 419. [2023-12-19 15:55:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 362 states have (on average 1.3149171270718232) internal successors, (476), 365 states have internal predecessors, (476), 46 states have call successors, (46), 10 states have call predecessors, (46), 10 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 15:55:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 568 transitions. [2023-12-19 15:55:20,714 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 568 transitions. Word has length 108 [2023-12-19 15:55:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:20,714 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 568 transitions. [2023-12-19 15:55:20,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 568 transitions. [2023-12-19 15:55:20,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 15:55:20,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:20,716 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:20,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:20,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:20,922 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:20,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1908171525, now seen corresponding path program 1 times [2023-12-19 15:55:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174522535] [2023-12-19 15:55:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:20,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:20,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432435235] [2023-12-19 15:55:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:20,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:20,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:20,943 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:20,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-19 15:55:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:21,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 15:55:21,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:21,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:21,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 14 [2023-12-19 15:55:21,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-19 15:55:21,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 63 [2023-12-19 15:55:21,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 32 [2023-12-19 15:55:21,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-12-19 15:55:21,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:21,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 61 [2023-12-19 15:55:21,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 91 [2023-12-19 15:55:21,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:21,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 113 [2023-12-19 15:55:21,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:21,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 74 [2023-12-19 15:55:21,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:21,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 154 [2023-12-19 15:55:21,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:21,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 238 treesize of output 98 [2023-12-19 15:55:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:22,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:22,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:22,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174522535] [2023-12-19 15:55:22,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:22,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432435235] [2023-12-19 15:55:22,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432435235] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:22,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 17 [2023-12-19 15:55:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384916205] [2023-12-19 15:55:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:22,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:55:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:55:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:55:22,324 INFO L87 Difference]: Start difference. First operand 419 states and 568 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:23,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:23,154 INFO L93 Difference]: Finished difference Result 1358 states and 1833 transitions. [2023-12-19 15:55:23,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-19 15:55:23,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 110 [2023-12-19 15:55:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:23,158 INFO L225 Difference]: With dead ends: 1358 [2023-12-19 15:55:23,158 INFO L226 Difference]: Without dead ends: 978 [2023-12-19 15:55:23,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2023-12-19 15:55:23,159 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 372 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:23,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1194 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 15:55:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2023-12-19 15:55:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 704. [2023-12-19 15:55:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 615 states have (on average 1.310569105691057) internal successors, (806), 621 states have internal predecessors, (806), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 65 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-19 15:55:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 948 transitions. [2023-12-19 15:55:23,192 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 948 transitions. Word has length 110 [2023-12-19 15:55:23,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:23,193 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 948 transitions. [2023-12-19 15:55:23,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:23,193 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 948 transitions. [2023-12-19 15:55:23,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 15:55:23,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:23,194 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:23,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:23,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:23,402 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:23,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:23,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1375678521, now seen corresponding path program 1 times [2023-12-19 15:55:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:23,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864075655] [2023-12-19 15:55:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:23,417 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:23,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679642564] [2023-12-19 15:55:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:23,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:23,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:23,419 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-19 15:55:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:23,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 15:55:23,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:23,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 53 [2023-12-19 15:55:23,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:23,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 89 [2023-12-19 15:55:23,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 24 [2023-12-19 15:55:23,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:23,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 66 [2023-12-19 15:55:23,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 95 [2023-12-19 15:55:23,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:23,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 123 [2023-12-19 15:55:23,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 79 [2023-12-19 15:55:23,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:23,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 234 treesize of output 146 [2023-12-19 15:55:24,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:24,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 252 treesize of output 88 [2023-12-19 15:55:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:24,408 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:24,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:24,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864075655] [2023-12-19 15:55:24,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:24,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679642564] [2023-12-19 15:55:24,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679642564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:24,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:24,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:55:24,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759175937] [2023-12-19 15:55:24,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:24,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:55:24,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:24,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:55:24,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:55:24,410 INFO L87 Difference]: Start difference. First operand 704 states and 948 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:24,978 INFO L93 Difference]: Finished difference Result 1556 states and 2093 transitions. [2023-12-19 15:55:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:55:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 110 [2023-12-19 15:55:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:24,982 INFO L225 Difference]: With dead ends: 1556 [2023-12-19 15:55:24,982 INFO L226 Difference]: Without dead ends: 891 [2023-12-19 15:55:24,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:55:24,984 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 221 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:24,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 840 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 15:55:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-12-19 15:55:25,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 686. [2023-12-19 15:55:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 597 states have (on average 1.3098827470686767) internal successors, (782), 603 states have internal predecessors, (782), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 65 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-19 15:55:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 924 transitions. [2023-12-19 15:55:25,032 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 924 transitions. Word has length 110 [2023-12-19 15:55:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:25,032 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 924 transitions. [2023-12-19 15:55:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 924 transitions. [2023-12-19 15:55:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 15:55:25,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:25,034 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:25,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-19 15:55:25,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:25,242 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:25,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash -521968131, now seen corresponding path program 1 times [2023-12-19 15:55:25,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:25,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076337884] [2023-12-19 15:55:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:25,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:25,272 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859181064] [2023-12-19 15:55:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:25,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:25,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:25,275 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:25,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-19 15:55:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:25,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-19 15:55:25,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:25,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 53 [2023-12-19 15:55:25,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:25,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 89 [2023-12-19 15:55:25,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-19 15:55:25,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:25,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 66 [2023-12-19 15:55:25,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 95 [2023-12-19 15:55:25,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:25,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 123 [2023-12-19 15:55:25,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:25,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 79 [2023-12-19 15:55:25,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:25,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 234 treesize of output 146 [2023-12-19 15:55:26,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:26,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 252 treesize of output 88 [2023-12-19 15:55:26,199 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:26,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:26,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:26,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076337884] [2023-12-19 15:55:26,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:26,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859181064] [2023-12-19 15:55:26,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859181064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:26,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:26,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-19 15:55:26,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893371317] [2023-12-19 15:55:26,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:26,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:55:26,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:26,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:55:26,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:55:26,201 INFO L87 Difference]: Start difference. First operand 686 states and 924 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:26,727 INFO L93 Difference]: Finished difference Result 1611 states and 2156 transitions. [2023-12-19 15:55:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 15:55:26,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 110 [2023-12-19 15:55:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:26,730 INFO L225 Difference]: With dead ends: 1611 [2023-12-19 15:55:26,730 INFO L226 Difference]: Without dead ends: 964 [2023-12-19 15:55:26,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:55:26,732 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 309 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:26,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 577 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:55:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-12-19 15:55:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 690. [2023-12-19 15:55:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 600 states have (on average 1.3033333333333332) internal successors, (782), 606 states have internal predecessors, (782), 71 states have call successors, (71), 18 states have call predecessors, (71), 18 states have return successors, (71), 65 states have call predecessors, (71), 71 states have call successors, (71) [2023-12-19 15:55:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 924 transitions. [2023-12-19 15:55:26,779 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 924 transitions. Word has length 110 [2023-12-19 15:55:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:26,779 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 924 transitions. [2023-12-19 15:55:26,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:26,780 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 924 transitions. [2023-12-19 15:55:26,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-19 15:55:26,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:26,782 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:26,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:26,989 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:26,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1533085381, now seen corresponding path program 1 times [2023-12-19 15:55:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804401038] [2023-12-19 15:55:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:27,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:27,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840990159] [2023-12-19 15:55:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:27,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:27,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:27,006 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:27,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-19 15:55:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:27,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 15:55:27,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:27,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 55 [2023-12-19 15:55:27,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2023-12-19 15:55:27,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-12-19 15:55:27,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:27,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 53 [2023-12-19 15:55:27,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 83 [2023-12-19 15:55:27,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:27,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 105 [2023-12-19 15:55:27,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:27,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 66 [2023-12-19 15:55:27,434 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:27,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 202 treesize of output 129 [2023-12-19 15:55:27,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:27,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 220 treesize of output 80 [2023-12-19 15:55:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:27,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:28,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804401038] [2023-12-19 15:55:28,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840990159] [2023-12-19 15:55:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840990159] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 15:55:28,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 15:55:28,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 17 [2023-12-19 15:55:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983567194] [2023-12-19 15:55:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 15:55:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 15:55:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-12-19 15:55:28,206 INFO L87 Difference]: Start difference. First operand 690 states and 924 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:28,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:28,921 INFO L93 Difference]: Finished difference Result 1717 states and 2288 transitions. [2023-12-19 15:55:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 15:55:28,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 110 [2023-12-19 15:55:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:28,925 INFO L225 Difference]: With dead ends: 1717 [2023-12-19 15:55:28,925 INFO L226 Difference]: Without dead ends: 1070 [2023-12-19 15:55:28,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-12-19 15:55:28,927 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 283 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:28,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1214 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 15:55:28,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2023-12-19 15:55:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 874. [2023-12-19 15:55:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 746 states have (on average 1.2841823056300268) internal successors, (958), 755 states have internal predecessors, (958), 100 states have call successors, (100), 27 states have call predecessors, (100), 27 states have return successors, (100), 91 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 15:55:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1158 transitions. [2023-12-19 15:55:28,992 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1158 transitions. Word has length 110 [2023-12-19 15:55:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:28,992 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1158 transitions. [2023-12-19 15:55:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1158 transitions. [2023-12-19 15:55:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-19 15:55:28,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:28,994 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:29,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:29,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-19 15:55:29,202 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:29,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:29,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2118837315, now seen corresponding path program 1 times [2023-12-19 15:55:29,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:29,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636915045] [2023-12-19 15:55:29,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:29,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:29,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:29,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372472832] [2023-12-19 15:55:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:29,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:29,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:29,220 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:29,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-19 15:55:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:29,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 15:55:29,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:29,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636915045] [2023-12-19 15:55:29,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372472832] [2023-12-19 15:55:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372472832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:55:29,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035111920] [2023-12-19 15:55:29,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:29,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:55:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:55:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:29,423 INFO L87 Difference]: Start difference. First operand 874 states and 1158 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:29,534 INFO L93 Difference]: Finished difference Result 1831 states and 2399 transitions. [2023-12-19 15:55:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:55:29,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2023-12-19 15:55:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:29,539 INFO L225 Difference]: With dead ends: 1831 [2023-12-19 15:55:29,539 INFO L226 Difference]: Without dead ends: 1000 [2023-12-19 15:55:29,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:55:29,541 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 43 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:29,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 599 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 15:55:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-19 15:55:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 883. [2023-12-19 15:55:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 755 states have (on average 1.280794701986755) internal successors, (967), 764 states have internal predecessors, (967), 100 states have call successors, (100), 27 states have call predecessors, (100), 27 states have return successors, (100), 91 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 15:55:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1167 transitions. [2023-12-19 15:55:29,605 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1167 transitions. Word has length 111 [2023-12-19 15:55:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:29,605 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1167 transitions. [2023-12-19 15:55:29,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1167 transitions. [2023-12-19 15:55:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-19 15:55:29,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:29,608 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:29,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:29,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 15:55:29,815 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:29,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash 892487112, now seen corresponding path program 1 times [2023-12-19 15:55:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:29,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363156949] [2023-12-19 15:55:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:29,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:29,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103256916] [2023-12-19 15:55:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:29,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:29,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:29,835 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:29,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-19 15:55:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:29,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:30,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:30,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:30,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 39 [2023-12-19 15:55:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:30,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:30,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363156949] [2023-12-19 15:55:30,207 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:30,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103256916] [2023-12-19 15:55:30,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103256916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:30,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:30,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958062503] [2023-12-19 15:55:30,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:30,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:30,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:30,209 INFO L87 Difference]: Start difference. First operand 883 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:30,438 INFO L93 Difference]: Finished difference Result 2017 states and 2591 transitions. [2023-12-19 15:55:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:30,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 113 [2023-12-19 15:55:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:30,442 INFO L225 Difference]: With dead ends: 2017 [2023-12-19 15:55:30,442 INFO L226 Difference]: Without dead ends: 1177 [2023-12-19 15:55:30,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:30,444 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 36 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:30,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 375 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:30,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2023-12-19 15:55:30,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1006. [2023-12-19 15:55:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 878 states have (on average 1.2482915717539864) internal successors, (1096), 887 states have internal predecessors, (1096), 100 states have call successors, (100), 27 states have call predecessors, (100), 27 states have return successors, (100), 91 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 15:55:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1296 transitions. [2023-12-19 15:55:30,507 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1296 transitions. Word has length 113 [2023-12-19 15:55:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:30,507 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1296 transitions. [2023-12-19 15:55:30,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:30,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1296 transitions. [2023-12-19 15:55:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 15:55:30,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:30,509 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:30,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:30,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 15:55:30,717 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:30,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash 809697218, now seen corresponding path program 1 times [2023-12-19 15:55:30,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:30,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407023175] [2023-12-19 15:55:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:30,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:30,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:30,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218981896] [2023-12-19 15:55:30,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:30,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:30,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:30,733 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:30,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-19 15:55:30,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:30,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:55:30,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:30,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:30,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:30,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407023175] [2023-12-19 15:55:30,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:30,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218981896] [2023-12-19 15:55:30,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218981896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:30,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:30,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:30,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556043770] [2023-12-19 15:55:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:30,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:30,928 INFO L87 Difference]: Start difference. First operand 1006 states and 1296 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:31,203 INFO L93 Difference]: Finished difference Result 2669 states and 3369 transitions. [2023-12-19 15:55:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:31,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 115 [2023-12-19 15:55:31,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:31,208 INFO L225 Difference]: With dead ends: 2669 [2023-12-19 15:55:31,208 INFO L226 Difference]: Without dead ends: 1706 [2023-12-19 15:55:31,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:31,210 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 88 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:31,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 381 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2023-12-19 15:55:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1159. [2023-12-19 15:55:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1031 states have (on average 1.2463627546071776) internal successors, (1285), 1040 states have internal predecessors, (1285), 100 states have call successors, (100), 27 states have call predecessors, (100), 27 states have return successors, (100), 91 states have call predecessors, (100), 100 states have call successors, (100) [2023-12-19 15:55:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1485 transitions. [2023-12-19 15:55:31,283 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1485 transitions. Word has length 115 [2023-12-19 15:55:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:31,283 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1485 transitions. [2023-12-19 15:55:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1485 transitions. [2023-12-19 15:55:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 15:55:31,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:31,286 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:31,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 15:55:31,493 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:31,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash 300224128, now seen corresponding path program 1 times [2023-12-19 15:55:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:31,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309466271] [2023-12-19 15:55:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:31,508 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216842069] [2023-12-19 15:55:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:31,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:31,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:31,509 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:31,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-19 15:55:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:31,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 15:55:31,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:31,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:31,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:31,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309466271] [2023-12-19 15:55:31,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:31,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216842069] [2023-12-19 15:55:31,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216842069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:31,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:31,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958182731] [2023-12-19 15:55:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:31,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:31,751 INFO L87 Difference]: Start difference. First operand 1159 states and 1485 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:31,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:31,990 INFO L93 Difference]: Finished difference Result 2884 states and 3593 transitions. [2023-12-19 15:55:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:55:31,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 115 [2023-12-19 15:55:31,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:31,994 INFO L225 Difference]: With dead ends: 2884 [2023-12-19 15:55:31,995 INFO L226 Difference]: Without dead ends: 1768 [2023-12-19 15:55:31,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:31,996 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 54 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:31,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 441 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2023-12-19 15:55:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1507. [2023-12-19 15:55:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1322 states have (on average 1.1944024205748864) internal successors, (1579), 1337 states have internal predecessors, (1579), 142 states have call successors, (142), 42 states have call predecessors, (142), 42 states have return successors, (142), 127 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 15:55:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1863 transitions. [2023-12-19 15:55:32,097 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1863 transitions. Word has length 115 [2023-12-19 15:55:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:32,097 INFO L495 AbstractCegarLoop]: Abstraction has 1507 states and 1863 transitions. [2023-12-19 15:55:32,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:32,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1863 transitions. [2023-12-19 15:55:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 15:55:32,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:32,100 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:32,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 15:55:32,307 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:32,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash 616777133, now seen corresponding path program 1 times [2023-12-19 15:55:32,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:32,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265084176] [2023-12-19 15:55:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:32,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572134357] [2023-12-19 15:55:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:32,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:32,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:32,323 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:32,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-19 15:55:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:32,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 15:55:32,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:32,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-19 15:55:32,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:32,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 28 [2023-12-19 15:55:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:32,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:32,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265084176] [2023-12-19 15:55:32,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:32,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572134357] [2023-12-19 15:55:32,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572134357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:32,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:32,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-19 15:55:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347904729] [2023-12-19 15:55:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:32,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 15:55:32,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 15:55:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-19 15:55:32,594 INFO L87 Difference]: Start difference. First operand 1507 states and 1863 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:33,213 INFO L93 Difference]: Finished difference Result 4323 states and 5247 transitions. [2023-12-19 15:55:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 15:55:33,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 116 [2023-12-19 15:55:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:33,222 INFO L225 Difference]: With dead ends: 4323 [2023-12-19 15:55:33,222 INFO L226 Difference]: Without dead ends: 2859 [2023-12-19 15:55:33,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=348, Invalid=912, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 15:55:33,225 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 325 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:33,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 930 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2023-12-19 15:55:33,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1774. [2023-12-19 15:55:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1589 states have (on average 1.2146003775959724) internal successors, (1930), 1604 states have internal predecessors, (1930), 142 states have call successors, (142), 42 states have call predecessors, (142), 42 states have return successors, (142), 127 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 15:55:33,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2214 transitions. [2023-12-19 15:55:33,352 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2214 transitions. Word has length 116 [2023-12-19 15:55:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:33,352 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2214 transitions. [2023-12-19 15:55:33,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:33,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2214 transitions. [2023-12-19 15:55:33,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 15:55:33,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:33,355 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:33,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:33,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:33,562 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:33,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1221126163, now seen corresponding path program 1 times [2023-12-19 15:55:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:33,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71146859] [2023-12-19 15:55:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:33,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:33,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503968023] [2023-12-19 15:55:33,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:33,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:33,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:33,580 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:33,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-19 15:55:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:33,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:33,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:33,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:33,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-19 15:55:33,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:33,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 14 [2023-12-19 15:55:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:33,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:33,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71146859] [2023-12-19 15:55:33,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:33,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503968023] [2023-12-19 15:55:33,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503968023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:33,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:33,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186980150] [2023-12-19 15:55:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:33,814 INFO L87 Difference]: Start difference. First operand 1774 states and 2214 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:34,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:34,144 INFO L93 Difference]: Finished difference Result 4031 states and 4988 transitions. [2023-12-19 15:55:34,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:34,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 119 [2023-12-19 15:55:34,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:34,152 INFO L225 Difference]: With dead ends: 4031 [2023-12-19 15:55:34,152 INFO L226 Difference]: Without dead ends: 2300 [2023-12-19 15:55:34,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:34,155 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 112 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:34,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 431 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2023-12-19 15:55:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1774. [2023-12-19 15:55:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1589 states have (on average 1.2089364380113279) internal successors, (1921), 1604 states have internal predecessors, (1921), 142 states have call successors, (142), 42 states have call predecessors, (142), 42 states have return successors, (142), 127 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-19 15:55:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2205 transitions. [2023-12-19 15:55:34,274 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2205 transitions. Word has length 119 [2023-12-19 15:55:34,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:34,274 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2205 transitions. [2023-12-19 15:55:34,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:34,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2205 transitions. [2023-12-19 15:55:34,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-19 15:55:34,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:34,277 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:34,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:34,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:34,485 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:34,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1957086427, now seen corresponding path program 1 times [2023-12-19 15:55:34,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:34,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162841545] [2023-12-19 15:55:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:34,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956957469] [2023-12-19 15:55:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:34,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:34,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:34,505 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:34,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-19 15:55:34,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:34,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-19 15:55:34,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:34,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:34,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-19 15:55:34,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:34,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 12 [2023-12-19 15:55:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:34,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:34,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:34,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162841545] [2023-12-19 15:55:34,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:34,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956957469] [2023-12-19 15:55:34,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956957469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:34,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:34,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082338119] [2023-12-19 15:55:34,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:34,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:34,779 INFO L87 Difference]: Start difference. First operand 1774 states and 2205 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:35,171 INFO L93 Difference]: Finished difference Result 4164 states and 5099 transitions. [2023-12-19 15:55:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:35,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 120 [2023-12-19 15:55:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:35,178 INFO L225 Difference]: With dead ends: 4164 [2023-12-19 15:55:35,178 INFO L226 Difference]: Without dead ends: 2430 [2023-12-19 15:55:35,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:35,181 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 98 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:35,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 563 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2023-12-19 15:55:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 2303. [2023-12-19 15:55:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 1985 states have (on average 1.1642317380352645) internal successors, (2311), 2010 states have internal predecessors, (2311), 243 states have call successors, (243), 74 states have call predecessors, (243), 74 states have return successors, (243), 218 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-19 15:55:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2797 transitions. [2023-12-19 15:55:35,339 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2797 transitions. Word has length 120 [2023-12-19 15:55:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:35,340 INFO L495 AbstractCegarLoop]: Abstraction has 2303 states and 2797 transitions. [2023-12-19 15:55:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2797 transitions. [2023-12-19 15:55:35,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-12-19 15:55:35,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:35,343 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:35,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:35,551 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:35,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash 677869339, now seen corresponding path program 1 times [2023-12-19 15:55:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:35,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864987258] [2023-12-19 15:55:35,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:35,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:35,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599624767] [2023-12-19 15:55:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:35,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:35,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:35,566 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:35,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-19 15:55:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:35,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-19 15:55:35,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:35,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-19 15:55:35,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:35,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 28 [2023-12-19 15:55:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:35,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:35,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864987258] [2023-12-19 15:55:35,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:35,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599624767] [2023-12-19 15:55:35,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599624767] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:35,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:35,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-19 15:55:35,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516470447] [2023-12-19 15:55:35,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:35,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 15:55:35,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 15:55:35,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-19 15:55:35,849 INFO L87 Difference]: Start difference. First operand 2303 states and 2797 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:36,604 INFO L93 Difference]: Finished difference Result 6115 states and 7288 transitions. [2023-12-19 15:55:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 15:55:36,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 123 [2023-12-19 15:55:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:36,615 INFO L225 Difference]: With dead ends: 6115 [2023-12-19 15:55:36,616 INFO L226 Difference]: Without dead ends: 3855 [2023-12-19 15:55:36,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=387, Invalid=1095, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 15:55:36,620 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 304 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:36,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1106 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:36,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2023-12-19 15:55:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 2507. [2023-12-19 15:55:36,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2507 states, 2189 states have (on average 1.1763362265874828) internal successors, (2575), 2214 states have internal predecessors, (2575), 243 states have call successors, (243), 74 states have call predecessors, (243), 74 states have return successors, (243), 218 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-19 15:55:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2507 states to 2507 states and 3061 transitions. [2023-12-19 15:55:36,806 INFO L78 Accepts]: Start accepts. Automaton has 2507 states and 3061 transitions. Word has length 123 [2023-12-19 15:55:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:36,807 INFO L495 AbstractCegarLoop]: Abstraction has 2507 states and 3061 transitions. [2023-12-19 15:55:36,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2507 states and 3061 transitions. [2023-12-19 15:55:36,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 15:55:36,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:36,811 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:36,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:37,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-19 15:55:37,019 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:37,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:37,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1291472555, now seen corresponding path program 1 times [2023-12-19 15:55:37,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:37,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931950025] [2023-12-19 15:55:37,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:37,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:37,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576281523] [2023-12-19 15:55:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:37,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:37,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:37,035 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:37,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-19 15:55:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:37,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 15:55:37,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:37,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:37,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-19 15:55:37,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-19 15:55:37,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-19 15:55:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:37,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931950025] [2023-12-19 15:55:37,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576281523] [2023-12-19 15:55:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576281523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 15:55:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350922432] [2023-12-19 15:55:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:37,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 15:55:37,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 15:55:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:37,283 INFO L87 Difference]: Start difference. First operand 2507 states and 3061 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:37,636 INFO L93 Difference]: Finished difference Result 5704 states and 6929 transitions. [2023-12-19 15:55:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:55:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 125 [2023-12-19 15:55:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:37,656 INFO L225 Difference]: With dead ends: 5704 [2023-12-19 15:55:37,656 INFO L226 Difference]: Without dead ends: 3240 [2023-12-19 15:55:37,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-19 15:55:37,660 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 79 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:37,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 624 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2023-12-19 15:55:37,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2696. [2023-12-19 15:55:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2378 states have (on average 1.1850294365012615) internal successors, (2818), 2403 states have internal predecessors, (2818), 243 states have call successors, (243), 74 states have call predecessors, (243), 74 states have return successors, (243), 218 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-19 15:55:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 3304 transitions. [2023-12-19 15:55:37,847 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 3304 transitions. Word has length 125 [2023-12-19 15:55:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:37,848 INFO L495 AbstractCegarLoop]: Abstraction has 2696 states and 3304 transitions. [2023-12-19 15:55:37,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:37,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 3304 transitions. [2023-12-19 15:55:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-19 15:55:37,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:37,852 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:37,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:38,059 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:38,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash 2055556417, now seen corresponding path program 1 times [2023-12-19 15:55:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:38,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632999797] [2023-12-19 15:55:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:38,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:38,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669425970] [2023-12-19 15:55:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:38,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:38,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:38,075 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:38,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-19 15:55:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:38,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-19 15:55:38,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:38,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:38,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-12-19 15:55:38,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 36 [2023-12-19 15:55:38,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 62 [2023-12-19 15:55:38,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2023-12-19 15:55:38,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:38,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 23 [2023-12-19 15:55:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:38,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:38,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:38,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632999797] [2023-12-19 15:55:38,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:38,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669425970] [2023-12-19 15:55:38,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669425970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:38,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-19 15:55:38,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588610071] [2023-12-19 15:55:38,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 15:55:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 15:55:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-19 15:55:38,416 INFO L87 Difference]: Start difference. First operand 2696 states and 3304 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:38,765 INFO L93 Difference]: Finished difference Result 6123 states and 7499 transitions. [2023-12-19 15:55:38,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 15:55:38,766 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 125 [2023-12-19 15:55:38,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:38,772 INFO L225 Difference]: With dead ends: 6123 [2023-12-19 15:55:38,772 INFO L226 Difference]: Without dead ends: 3470 [2023-12-19 15:55:38,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:55:38,776 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 86 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:38,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 739 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2023-12-19 15:55:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2918. [2023-12-19 15:55:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 2600 states have (on average 1.198076923076923) internal successors, (3115), 2625 states have internal predecessors, (3115), 243 states have call successors, (243), 74 states have call predecessors, (243), 74 states have return successors, (243), 218 states have call predecessors, (243), 243 states have call successors, (243) [2023-12-19 15:55:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 3601 transitions. [2023-12-19 15:55:38,924 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 3601 transitions. Word has length 125 [2023-12-19 15:55:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:38,924 INFO L495 AbstractCegarLoop]: Abstraction has 2918 states and 3601 transitions. [2023-12-19 15:55:38,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:38,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 3601 transitions. [2023-12-19 15:55:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 15:55:38,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:38,929 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:38,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:39,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 15:55:39,136 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:39,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash 582571762, now seen corresponding path program 1 times [2023-12-19 15:55:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896479877] [2023-12-19 15:55:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:39,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:39,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:39,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073709931] [2023-12-19 15:55:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:39,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:39,156 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:39,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-19 15:55:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:39,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 15:55:39,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:39,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-19 15:55:39,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-12-19 15:55:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:39,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:39,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:39,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896479877] [2023-12-19 15:55:39,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073709931] [2023-12-19 15:55:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073709931] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:39,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055641812] [2023-12-19 15:55:39,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:39,417 INFO L87 Difference]: Start difference. First operand 2918 states and 3601 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:39,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:39,927 INFO L93 Difference]: Finished difference Result 7619 states and 9364 transitions. [2023-12-19 15:55:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:55:39,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2023-12-19 15:55:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:39,936 INFO L225 Difference]: With dead ends: 7619 [2023-12-19 15:55:39,936 INFO L226 Difference]: Without dead ends: 4744 [2023-12-19 15:55:39,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:39,940 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 148 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:39,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 277 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2023-12-19 15:55:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 3995. [2023-12-19 15:55:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3548 states have (on average 1.190248027057497) internal successors, (4223), 3583 states have internal predecessors, (4223), 344 states have call successors, (344), 102 states have call predecessors, (344), 102 states have return successors, (344), 309 states have call predecessors, (344), 344 states have call successors, (344) [2023-12-19 15:55:40,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 4911 transitions. [2023-12-19 15:55:40,163 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 4911 transitions. Word has length 126 [2023-12-19 15:55:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:40,163 INFO L495 AbstractCegarLoop]: Abstraction has 3995 states and 4911 transitions. [2023-12-19 15:55:40,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 4911 transitions. [2023-12-19 15:55:40,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 15:55:40,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:40,168 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:40,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:40,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:40,376 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:40,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1005776140, now seen corresponding path program 1 times [2023-12-19 15:55:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:40,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360455351] [2023-12-19 15:55:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:40,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:40,403 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:40,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360825744] [2023-12-19 15:55:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:40,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:40,405 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:40,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-19 15:55:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:40,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 15:55:40,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:40,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-19 15:55:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:40,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:40,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:40,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360455351] [2023-12-19 15:55:40,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:40,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360825744] [2023-12-19 15:55:40,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360825744] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:40,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:40,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130117488] [2023-12-19 15:55:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:40,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:40,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:40,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:40,655 INFO L87 Difference]: Start difference. First operand 3995 states and 4911 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:41,152 INFO L93 Difference]: Finished difference Result 9207 states and 11255 transitions. [2023-12-19 15:55:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:55:41,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2023-12-19 15:55:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:41,162 INFO L225 Difference]: With dead ends: 9207 [2023-12-19 15:55:41,162 INFO L226 Difference]: Without dead ends: 5255 [2023-12-19 15:55:41,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:41,168 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 132 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:41,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 547 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 15:55:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2023-12-19 15:55:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 4857. [2023-12-19 15:55:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 4292 states have (on average 1.1733457595526562) internal successors, (5036), 4335 states have internal predecessors, (5036), 438 states have call successors, (438), 126 states have call predecessors, (438), 126 states have return successors, (438), 395 states have call predecessors, (438), 438 states have call successors, (438) [2023-12-19 15:55:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 5912 transitions. [2023-12-19 15:55:41,473 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 5912 transitions. Word has length 126 [2023-12-19 15:55:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:41,474 INFO L495 AbstractCegarLoop]: Abstraction has 4857 states and 5912 transitions. [2023-12-19 15:55:41,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:41,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 5912 transitions. [2023-12-19 15:55:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 15:55:41,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:41,479 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:41,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:41,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-19 15:55:41,687 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:41,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:41,687 INFO L85 PathProgramCache]: Analyzing trace with hash 271125421, now seen corresponding path program 1 times [2023-12-19 15:55:41,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:41,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715217054] [2023-12-19 15:55:41,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:41,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:41,704 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:41,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863988962] [2023-12-19 15:55:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:41,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:41,706 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:41,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-19 15:55:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:41,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 15:55:41,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:41,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2023-12-19 15:55:41,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 60 [2023-12-19 15:55:41,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:41,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2023-12-19 15:55:42,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:42,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 19 [2023-12-19 15:55:42,090 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:42,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:42,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:42,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715217054] [2023-12-19 15:55:42,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:42,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863988962] [2023-12-19 15:55:42,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863988962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:42,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:42,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 15:55:42,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593971914] [2023-12-19 15:55:42,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:42,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 15:55:42,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 15:55:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 15:55:42,092 INFO L87 Difference]: Start difference. First operand 4857 states and 5912 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:42,971 INFO L93 Difference]: Finished difference Result 15271 states and 18529 transitions. [2023-12-19 15:55:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-19 15:55:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2023-12-19 15:55:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:42,991 INFO L225 Difference]: With dead ends: 15271 [2023-12-19 15:55:42,992 INFO L226 Difference]: Without dead ends: 10439 [2023-12-19 15:55:43,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-19 15:55:43,001 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 258 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:43,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 852 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 15:55:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10439 states. [2023-12-19 15:55:43,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10439 to 6311. [2023-12-19 15:55:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6311 states, 5558 states have (on average 1.1716444764303706) internal successors, (6512), 5615 states have internal predecessors, (6512), 586 states have call successors, (586), 166 states have call predecessors, (586), 166 states have return successors, (586), 529 states have call predecessors, (586), 586 states have call successors, (586) [2023-12-19 15:55:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 7684 transitions. [2023-12-19 15:55:43,506 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 7684 transitions. Word has length 126 [2023-12-19 15:55:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:43,506 INFO L495 AbstractCegarLoop]: Abstraction has 6311 states and 7684 transitions. [2023-12-19 15:55:43,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 7684 transitions. [2023-12-19 15:55:43,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-12-19 15:55:43,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:43,512 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:43,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-19 15:55:43,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-19 15:55:43,712 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:43,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:43,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1024919553, now seen corresponding path program 1 times [2023-12-19 15:55:43,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:43,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959896309] [2023-12-19 15:55:43,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:43,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:43,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616319894] [2023-12-19 15:55:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:43,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:43,730 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:43,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-19 15:55:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:43,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 15:55:43,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:43,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-19 15:55:43,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-12-19 15:55:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:43,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:43,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:43,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959896309] [2023-12-19 15:55:43,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:43,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616319894] [2023-12-19 15:55:43,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616319894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:43,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:43,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:43,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577445750] [2023-12-19 15:55:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:43,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:43,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:43,983 INFO L87 Difference]: Start difference. First operand 6311 states and 7684 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:44,616 INFO L93 Difference]: Finished difference Result 13815 states and 16735 transitions. [2023-12-19 15:55:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 15:55:44,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2023-12-19 15:55:44,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:44,631 INFO L225 Difference]: With dead ends: 13815 [2023-12-19 15:55:44,631 INFO L226 Difference]: Without dead ends: 7547 [2023-12-19 15:55:44,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:44,640 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 126 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:44,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 268 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:44,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7547 states. [2023-12-19 15:55:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7547 to 5624. [2023-12-19 15:55:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5624 states, 4871 states have (on average 1.1463765140628208) internal successors, (5584), 4928 states have internal predecessors, (5584), 586 states have call successors, (586), 166 states have call predecessors, (586), 166 states have return successors, (586), 529 states have call predecessors, (586), 586 states have call successors, (586) [2023-12-19 15:55:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5624 states to 5624 states and 6756 transitions. [2023-12-19 15:55:45,072 INFO L78 Accepts]: Start accepts. Automaton has 5624 states and 6756 transitions. Word has length 126 [2023-12-19 15:55:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:45,072 INFO L495 AbstractCegarLoop]: Abstraction has 5624 states and 6756 transitions. [2023-12-19 15:55:45,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5624 states and 6756 transitions. [2023-12-19 15:55:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 15:55:45,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:45,077 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:45,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-19 15:55:45,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-19 15:55:45,284 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:45,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:45,285 INFO L85 PathProgramCache]: Analyzing trace with hash -488562168, now seen corresponding path program 1 times [2023-12-19 15:55:45,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:45,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879558917] [2023-12-19 15:55:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:45,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:45,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:45,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446784271] [2023-12-19 15:55:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:45,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:45,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:45,301 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:45,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-19 15:55:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:45,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 15:55:45,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:45,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-19 15:55:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 15:55:45,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 15:55:45,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879558917] [2023-12-19 15:55:45,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:45,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446784271] [2023-12-19 15:55:45,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446784271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 15:55:45,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 15:55:45,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 15:55:45,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973195522] [2023-12-19 15:55:45,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 15:55:45,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 15:55:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 15:55:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 15:55:45,579 INFO L87 Difference]: Start difference. First operand 5624 states and 6756 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:46,242 INFO L93 Difference]: Finished difference Result 13599 states and 16346 transitions. [2023-12-19 15:55:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 15:55:46,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 127 [2023-12-19 15:55:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:46,259 INFO L225 Difference]: With dead ends: 13599 [2023-12-19 15:55:46,259 INFO L226 Difference]: Without dead ends: 7994 [2023-12-19 15:55:46,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 15:55:46,270 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 140 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:46,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 554 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 15:55:46,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7994 states. [2023-12-19 15:55:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7994 to 7211. [2023-12-19 15:55:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7211 states, 6270 states have (on average 1.1486443381180222) internal successors, (7202), 6341 states have internal predecessors, (7202), 734 states have call successors, (734), 206 states have call predecessors, (734), 206 states have return successors, (734), 663 states have call predecessors, (734), 734 states have call successors, (734) [2023-12-19 15:55:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 8670 transitions. [2023-12-19 15:55:46,816 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 8670 transitions. Word has length 127 [2023-12-19 15:55:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:46,817 INFO L495 AbstractCegarLoop]: Abstraction has 7211 states and 8670 transitions. [2023-12-19 15:55:46,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-19 15:55:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 8670 transitions. [2023-12-19 15:55:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-19 15:55:46,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 15:55:46,822 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 15:55:46,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-19 15:55:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-19 15:55:47,026 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 15:55:47,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 15:55:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1332567670, now seen corresponding path program 1 times [2023-12-19 15:55:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 15:55:47,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434880739] [2023-12-19 15:55:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 15:55:47,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 15:55:47,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766459886] [2023-12-19 15:55:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 15:55:47,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:47,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 15:55:47,041 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 15:55:47,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-19 15:55:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 15:55:47,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-19 15:55:47,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 15:55:47,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-19 15:55:47,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-19 15:55:47,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:47,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2023-12-19 15:55:47,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2023-12-19 15:55:47,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 73 [2023-12-19 15:55:47,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 40 [2023-12-19 15:55:47,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:47,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 84 [2023-12-19 15:55:47,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:47,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 97 treesize of output 90 [2023-12-19 15:55:48,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 15:55:48,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 107 treesize of output 51 [2023-12-19 15:55:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-19 15:55:48,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 15:55:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-19 15:55:48,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 15:55:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434880739] [2023-12-19 15:55:48,158 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 15:55:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766459886] [2023-12-19 15:55:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766459886] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 15:55:48,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 15:55:48,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-12-19 15:55:48,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592609467] [2023-12-19 15:55:48,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 15:55:48,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-19 15:55:48,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 15:55:48,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-19 15:55:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-19 15:55:48,160 INFO L87 Difference]: Start difference. First operand 7211 states and 8670 transitions. Second operand has 15 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 6 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 6 states have call successors, (26) [2023-12-19 15:55:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 15:55:49,133 INFO L93 Difference]: Finished difference Result 14579 states and 17179 transitions. [2023-12-19 15:55:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-19 15:55:49,134 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 6 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 6 states have call successors, (26) Word has length 127 [2023-12-19 15:55:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 15:55:49,134 INFO L225 Difference]: With dead ends: 14579 [2023-12-19 15:55:49,134 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 15:55:49,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2023-12-19 15:55:49,144 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 195 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 15:55:49,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 219 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 15:55:49,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 15:55:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 15:55:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 15:55:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 15:55:49,146 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2023-12-19 15:55:49,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 15:55:49,146 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 15:55:49,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.0) internal successors, (117), 15 states have internal predecessors, (117), 6 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (26), 4 states have call predecessors, (26), 6 states have call successors, (26) [2023-12-19 15:55:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 15:55:49,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 15:55:49,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 15:55:49,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2023-12-19 15:55:49,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 15:55:49,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 15:56:37,699 WARN L293 SmtUtils]: Spent 45.45s on a formula simplification. DAG size of input: 505 DAG size of output: 734 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-19 15:57:23,437 WARN L293 SmtUtils]: Spent 45.32s on a formula simplification. DAG size of input: 505 DAG size of output: 734 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-19 15:57:38,537 WARN L293 SmtUtils]: Spent 14.87s on a formula simplification. DAG size of input: 459 DAG size of output: 581 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2023-12-19 15:58:23,729 WARN L293 SmtUtils]: Spent 45.19s on a formula simplification. DAG size of input: 505 DAG size of output: 734 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Received shutdown request... [2023-12-19 16:09:27,836 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 16:09:27,842 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-80-14-10-9-10-9-10-9-10-9-9-9-8-9-7-9-6-9-5-9-5-9-5-6-4-6-3-6-2-5-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-122-14-11-9-10-9-10-9-10-9-9-9-8-9-7-9-6-9-5-9-5-9-5-9-4-9-3-6-2-5-1 context. [2023-12-19 16:09:27,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-19 16:09:27,857 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-19 16:09:27,859 INFO L158 Benchmark]: Toolchain (without parser) took 866785.08ms. Allocated memory was 315.6MB in the beginning and 1.0GB in the end (delta: 718.3MB). Free memory was 262.1MB in the beginning and 388.5MB in the end (delta: -126.4MB). Peak memory consumption was 594.5MB. Max. memory is 8.0GB. [2023-12-19 16:09:27,859 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 208.7MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 16:09:27,859 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.89ms. Allocated memory is still 315.6MB. Free memory was 261.8MB in the beginning and 246.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 16:09:27,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.64ms. Allocated memory is still 315.6MB. Free memory was 246.6MB in the beginning and 242.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 16:09:27,860 INFO L158 Benchmark]: Boogie Preprocessor took 60.95ms. Allocated memory is still 315.6MB. Free memory was 242.4MB in the beginning and 238.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 16:09:27,860 INFO L158 Benchmark]: RCFGBuilder took 658.90ms. Allocated memory is still 315.6MB. Free memory was 238.0MB in the beginning and 259.1MB in the end (delta: -21.1MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. [2023-12-19 16:09:27,860 INFO L158 Benchmark]: TraceAbstraction took 865727.07ms. Allocated memory was 315.6MB in the beginning and 1.0GB in the end (delta: 718.3MB). Free memory was 258.0MB in the beginning and 388.5MB in the end (delta: -130.5MB). Peak memory consumption was 587.8MB. Max. memory is 8.0GB. [2023-12-19 16:09:27,861 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 208.7MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 276.89ms. Allocated memory is still 315.6MB. Free memory was 261.8MB in the beginning and 246.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.64ms. Allocated memory is still 315.6MB. Free memory was 246.6MB in the beginning and 242.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.95ms. Allocated memory is still 315.6MB. Free memory was 242.4MB in the beginning and 238.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 658.90ms. Allocated memory is still 315.6MB. Free memory was 238.0MB in the beginning and 259.1MB in the end (delta: -21.1MB). Peak memory consumption was 19.2MB. Max. memory is 8.0GB. * TraceAbstraction took 865727.07ms. Allocated memory was 315.6MB in the beginning and 1.0GB in the end (delta: 718.3MB). Free memory was 258.0MB in the beginning and 388.5MB in the end (delta: -130.5MB). Peak memory consumption was 587.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-39-6-5-4-4-4-4-4-4-4-3-4-2-3-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-50-6-5-4-4-4-4-4-4-4-3-4-2-3-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown