/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-multidimensional/init-3-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 09:09:15,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 09:09:15,656 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 09:09:15,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 09:09:15,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 09:09:15,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 09:09:15,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 09:09:15,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 09:09:15,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 09:09:15,685 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 09:09:15,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 09:09:15,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 09:09:15,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 09:09:15,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 09:09:15,686 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 09:09:15,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 09:09:15,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 09:09:15,687 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 09:09:15,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 09:09:15,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 09:09:15,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 09:09:15,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 09:09:15,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 09:09:15,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 09:09:15,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 09:09:15,689 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 09:09:15,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 09:09:15,689 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 09:09:15,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 09:09:15,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 09:09:15,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 09:09:15,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:09:15,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 09:09:15,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 09:09:15,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 09:09:15,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 09:09:15,692 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 09:09:15,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 09:09:15,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 09:09:15,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 09:09:15,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 09:09:15,904 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 09:09:15,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/init-3-u.c [2023-12-20 09:09:16,839 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 09:09:16,979 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 09:09:16,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-3-u.c [2023-12-20 09:09:16,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5acdeec81/1ed34df78ded4f4cb69945889dbd5425/FLAG11ae475d3 [2023-12-20 09:09:17,001 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5acdeec81/1ed34df78ded4f4cb69945889dbd5425 [2023-12-20 09:09:17,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 09:09:17,003 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 09:09:17,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 09:09:17,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 09:09:17,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 09:09:17,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e3e4380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17, skipping insertion in model container [2023-12-20 09:09:17,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,026 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 09:09:17,145 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-3-u.c[320,333] [2023-12-20 09:09:17,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:09:17,169 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 09:09:17,179 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/init-3-u.c[320,333] [2023-12-20 09:09:17,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:09:17,204 INFO L206 MainTranslator]: Completed translation [2023-12-20 09:09:17,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17 WrapperNode [2023-12-20 09:09:17,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 09:09:17,207 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 09:09:17,207 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 09:09:17,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 09:09:17,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,239 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2023-12-20 09:09:17,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 09:09:17,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 09:09:17,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 09:09:17,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 09:09:17,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,266 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-20 09:09:17,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,266 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,289 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,297 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 09:09:17,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 09:09:17,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 09:09:17,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 09:09:17,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (1/1) ... [2023-12-20 09:09:17,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:09:17,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:17,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 09:09:17,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 09:09:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 09:09:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 09:09:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 09:09:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 09:09:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 09:09:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 09:09:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 09:09:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 09:09:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 09:09:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 09:09:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 09:09:17,423 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 09:09:17,427 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 09:09:17,580 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 09:09:17,595 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 09:09:17,595 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-20 09:09:17,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:09:17 BoogieIcfgContainer [2023-12-20 09:09:17,599 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 09:09:17,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 09:09:17,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 09:09:17,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 09:09:17,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:09:17" (1/3) ... [2023-12-20 09:09:17,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1a538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:09:17, skipping insertion in model container [2023-12-20 09:09:17,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:09:17" (2/3) ... [2023-12-20 09:09:17,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1a538c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:09:17, skipping insertion in model container [2023-12-20 09:09:17,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:09:17" (3/3) ... [2023-12-20 09:09:17,605 INFO L112 eAbstractionObserver]: Analyzing ICFG init-3-u.c [2023-12-20 09:09:17,619 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 09:09:17,620 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 09:09:17,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 09:09:17,666 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;@2b864768, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 09:09:17,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 09:09:17,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-20 09:09:17,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:17,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:17,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:17,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash -526685124, now seen corresponding path program 1 times [2023-12-20 09:09:17,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:17,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579037995] [2023-12-20 09:09:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:17,760 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:17,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55537953] [2023-12-20 09:09:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:17,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:17,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:17,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:17,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 09:09:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:09:17,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 09:09:17,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:17,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:09:17,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579037995] [2023-12-20 09:09:17,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55537953] [2023-12-20 09:09:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55537953] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:09:17,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:09:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 09:09:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133245172] [2023-12-20 09:09:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:09:17,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 09:09:17,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 09:09:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 09:09:17,873 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:17,891 INFO L93 Difference]: Finished difference Result 35 states and 59 transitions. [2023-12-20 09:09:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 09:09:17,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-20 09:09:17,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:17,898 INFO L225 Difference]: With dead ends: 35 [2023-12-20 09:09:17,898 INFO L226 Difference]: Without dead ends: 16 [2023-12-20 09:09:17,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 09:09:17,903 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:17,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:09:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-20 09:09:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-20 09:09:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2023-12-20 09:09:17,972 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 8 [2023-12-20 09:09:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:17,973 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2023-12-20 09:09:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2023-12-20 09:09:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-20 09:09:17,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:17,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:17,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 09:09:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 09:09:18,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:18,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:18,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1381991778, now seen corresponding path program 1 times [2023-12-20 09:09:18,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:18,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463257978] [2023-12-20 09:09:18,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:18,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:18,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:18,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958592710] [2023-12-20 09:09:18,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:18,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:18,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:18,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:18,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 09:09:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:09:18,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:09:18,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:18,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:09:18,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463257978] [2023-12-20 09:09:18,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:18,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958592710] [2023-12-20 09:09:18,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958592710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:09:18,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:09:18,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 09:09:18,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675712380] [2023-12-20 09:09:18,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:09:18,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 09:09:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 09:09:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 09:09:18,291 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:18,315 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2023-12-20 09:09:18,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 09:09:18,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-20 09:09:18,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:18,315 INFO L225 Difference]: With dead ends: 31 [2023-12-20 09:09:18,316 INFO L226 Difference]: Without dead ends: 21 [2023-12-20 09:09:18,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 09:09:18,317 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:18,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:09:18,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-20 09:09:18,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2023-12-20 09:09:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-20 09:09:18,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2023-12-20 09:09:18,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:18,320 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-20 09:09:18,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,320 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-20 09:09:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-20 09:09:18,321 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:18,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:18,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 09:09:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 09:09:18,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:18,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash -236778402, now seen corresponding path program 1 times [2023-12-20 09:09:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:18,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714685703] [2023-12-20 09:09:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:18,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:18,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882175492] [2023-12-20 09:09:18,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:18,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:18,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:18,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:18,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 09:09:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:09:18,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:09:18,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:18,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:18,605 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:09:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714685703] [2023-12-20 09:09:18,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:18,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882175492] [2023-12-20 09:09:18,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882175492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:09:18,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:09:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 09:09:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486415489] [2023-12-20 09:09:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:09:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:09:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:18,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:09:18,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:09:18,607 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:18,647 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-20 09:09:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:09:18,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-20 09:09:18,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:18,650 INFO L225 Difference]: With dead ends: 43 [2023-12-20 09:09:18,650 INFO L226 Difference]: Without dead ends: 28 [2023-12-20 09:09:18,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:09:18,651 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:18,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 13 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:09:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-20 09:09:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2023-12-20 09:09:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-12-20 09:09:18,655 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2023-12-20 09:09:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:18,655 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-12-20 09:09:18,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,655 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-12-20 09:09:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-20 09:09:18,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:18,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:18,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 09:09:18,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:18,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:18,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1385813380, now seen corresponding path program 1 times [2023-12-20 09:09:18,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:18,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499159320] [2023-12-20 09:09:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:18,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:18,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806142303] [2023-12-20 09:09:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:18,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:18,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:18,882 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:18,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 09:09:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:09:18,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:09:18,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:18,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:09:18,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:18,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499159320] [2023-12-20 09:09:18,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:18,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806142303] [2023-12-20 09:09:18,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806142303] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:09:18,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:09:18,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 09:09:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829117071] [2023-12-20 09:09:18,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:09:18,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:09:18,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:18,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:09:18,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:09:18,938 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:18,966 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2023-12-20 09:09:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:09:18,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-20 09:09:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:18,967 INFO L225 Difference]: With dead ends: 43 [2023-12-20 09:09:18,967 INFO L226 Difference]: Without dead ends: 26 [2023-12-20 09:09:18,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:09:18,968 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:18,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:09:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-20 09:09:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-12-20 09:09:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2023-12-20 09:09:18,974 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 14 [2023-12-20 09:09:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:18,975 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2023-12-20 09:09:18,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2023-12-20 09:09:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-20 09:09:18,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:18,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:18,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 09:09:19,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:19,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:19,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1868918897, now seen corresponding path program 1 times [2023-12-20 09:09:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513422530] [2023-12-20 09:09:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:19,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:19,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596591881] [2023-12-20 09:09:19,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:19,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:19,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:19,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 09:09:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:09:19,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:09:19,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:19,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:19,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:09:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513422530] [2023-12-20 09:09:19,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596591881] [2023-12-20 09:09:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596591881] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:09:19,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:09:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-20 09:09:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922519653] [2023-12-20 09:09:19,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:09:19,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 09:09:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 09:09:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 09:09:19,270 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:19,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:19,339 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2023-12-20 09:09:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 09:09:19,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-20 09:09:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:19,341 INFO L225 Difference]: With dead ends: 59 [2023-12-20 09:09:19,341 INFO L226 Difference]: Without dead ends: 40 [2023-12-20 09:09:19,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-20 09:09:19,342 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 84 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:19,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 25 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:09:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-20 09:09:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-12-20 09:09:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-20 09:09:19,347 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 15 [2023-12-20 09:09:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:19,347 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-20 09:09:19,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-20 09:09:19,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-20 09:09:19,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:19,348 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:19,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 09:09:19,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:19,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:19,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 165697340, now seen corresponding path program 2 times [2023-12-20 09:09:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:19,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881804439] [2023-12-20 09:09:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:19,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:19,567 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:19,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402226367] [2023-12-20 09:09:19,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 09:09:19,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:19,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:19,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:19,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 09:09:19,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 09:09:19,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:09:19,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 09:09:19,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:19,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:09:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:09:19,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881804439] [2023-12-20 09:09:19,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402226367] [2023-12-20 09:09:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402226367] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:09:19,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:09:19,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-20 09:09:19,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552350973] [2023-12-20 09:09:19,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:09:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 09:09:19,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 09:09:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-12-20 09:09:19,782 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:19,932 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2023-12-20 09:09:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 09:09:19,932 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-20 09:09:19,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:19,933 INFO L225 Difference]: With dead ends: 107 [2023-12-20 09:09:19,933 INFO L226 Difference]: Without dead ends: 76 [2023-12-20 09:09:19,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-12-20 09:09:19,934 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 235 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:19,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 39 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 09:09:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-20 09:09:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2023-12-20 09:09:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2023-12-20 09:09:19,943 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 18 [2023-12-20 09:09:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:19,943 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2023-12-20 09:09:19,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2023-12-20 09:09:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-20 09:09:19,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:19,945 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:19,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 09:09:20,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:20,150 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:20,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash 308962908, now seen corresponding path program 3 times [2023-12-20 09:09:20,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:20,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457322340] [2023-12-20 09:09:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:20,159 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:20,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543759786] [2023-12-20 09:09:20,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 09:09:20,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:20,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:20,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 09:09:20,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 09:09:20,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:09:20,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:09:20,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-20 09:09:20,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:09:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-20 09:09:20,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:20,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457322340] [2023-12-20 09:09:20,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543759786] [2023-12-20 09:09:20,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543759786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:09:20,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:09:20,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-20 09:09:20,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102381560] [2023-12-20 09:09:20,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:09:20,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 09:09:20,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:20,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 09:09:20,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 09:09:20,299 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:20,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:20,343 INFO L93 Difference]: Finished difference Result 144 states and 178 transitions. [2023-12-20 09:09:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 09:09:20,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-20 09:09:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:20,345 INFO L225 Difference]: With dead ends: 144 [2023-12-20 09:09:20,345 INFO L226 Difference]: Without dead ends: 105 [2023-12-20 09:09:20,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 09:09:20,346 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:20,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:09:20,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-20 09:09:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-12-20 09:09:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 104 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2023-12-20 09:09:20,358 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 24 [2023-12-20 09:09:20,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:20,358 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2023-12-20 09:09:20,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2023-12-20 09:09:20,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 09:09:20,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:20,360 INFO L195 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:20,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 09:09:20,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:20,567 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:20,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1238679958, now seen corresponding path program 4 times [2023-12-20 09:09:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:20,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892309811] [2023-12-20 09:09:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:20,585 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:20,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1024822954] [2023-12-20 09:09:20,585 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 09:09:20,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:20,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:20,586 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:20,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 09:09:20,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 09:09:20,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:09:20,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 09:09:20,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:09:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 427 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-12-20 09:09:20,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:09:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 427 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-12-20 09:09:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:09:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892309811] [2023-12-20 09:09:20,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:09:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024822954] [2023-12-20 09:09:20,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024822954] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:09:20,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:09:20,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-12-20 09:09:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009887016] [2023-12-20 09:09:20,917 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:09:20,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 09:09:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:09:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 09:09:20,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=484, Unknown=0, NotChecked=0, Total=756 [2023-12-20 09:09:20,918 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:09:21,448 INFO L93 Difference]: Finished difference Result 496 states and 571 transitions. [2023-12-20 09:09:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-20 09:09:21,448 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-20 09:09:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:09:21,450 INFO L225 Difference]: With dead ends: 496 [2023-12-20 09:09:21,450 INFO L226 Difference]: Without dead ends: 407 [2023-12-20 09:09:21,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1415, Invalid=2617, Unknown=0, NotChecked=0, Total=4032 [2023-12-20 09:09:21,452 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 210 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 09:09:21,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 241 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 09:09:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-12-20 09:09:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 360. [2023-12-20 09:09:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.1838440111420614) internal successors, (425), 359 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 425 transitions. [2023-12-20 09:09:21,516 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 425 transitions. Word has length 72 [2023-12-20 09:09:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:09:21,516 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 425 transitions. [2023-12-20 09:09:21,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:09:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 425 transitions. [2023-12-20 09:09:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-20 09:09:21,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:09:21,519 INFO L195 NwaCegarLoop]: trace histogram [160, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:09:21,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 09:09:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 09:09:21,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:09:21,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:09:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -686609762, now seen corresponding path program 5 times [2023-12-20 09:09:21,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:09:21,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952664196] [2023-12-20 09:09:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:09:21,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:09:21,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:09:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1890805171] [2023-12-20 09:09:21,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 09:09:21,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:09:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:09:21,779 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:09:21,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 09:10:16,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-12-20 09:10:16,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:10:16,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 09:10:16,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:10:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15726 backedges. 9904 proven. 772 refuted. 0 times theorem prover too weak. 5050 trivial. 0 not checked. [2023-12-20 09:10:16,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:10:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 15726 backedges. 9904 proven. 772 refuted. 0 times theorem prover too weak. 5050 trivial. 0 not checked. [2023-12-20 09:10:16,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:10:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952664196] [2023-12-20 09:10:16,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:10:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890805171] [2023-12-20 09:10:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890805171] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:10:16,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:10:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2023-12-20 09:10:16,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293335968] [2023-12-20 09:10:16,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:10:16,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 09:10:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:10:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 09:10:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-12-20 09:10:16,846 INFO L87 Difference]: Start difference. First operand 360 states and 425 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:10:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:10:17,286 INFO L93 Difference]: Finished difference Result 857 states and 1004 transitions. [2023-12-20 09:10:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 09:10:17,287 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2023-12-20 09:10:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:10:17,291 INFO L225 Difference]: With dead ends: 857 [2023-12-20 09:10:17,292 INFO L226 Difference]: Without dead ends: 552 [2023-12-20 09:10:17,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=590, Invalid=1480, Unknown=0, NotChecked=0, Total=2070 [2023-12-20 09:10:17,297 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 209 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 09:10:17,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 188 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 09:10:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-20 09:10:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 445. [2023-12-20 09:10:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.1824324324324325) internal successors, (525), 444 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:10:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 525 transitions. [2023-12-20 09:10:17,350 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 525 transitions. Word has length 228 [2023-12-20 09:10:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:10:17,350 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 525 transitions. [2023-12-20 09:10:17,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:10:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 525 transitions. [2023-12-20 09:10:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-20 09:10:17,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:10:17,356 INFO L195 NwaCegarLoop]: trace histogram [200, 20, 20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:10:17,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 09:10:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:10:17,572 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:10:17,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:10:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 199674262, now seen corresponding path program 6 times [2023-12-20 09:10:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:10:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6290750] [2023-12-20 09:10:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:10:17,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:10:17,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:10:17,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561531422] [2023-12-20 09:10:17,618 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 09:10:17,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:10:17,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:10:17,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:10:17,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 09:24:06,552 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 09:24:06,552 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 09:24:07,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 09:24:07,756 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2023-12-20 09:24:07,765 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-20 09:24:07,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 09:24:07,784 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2023-12-20 09:24:07,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 09:24:07,785 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 281 with TraceHistMax 200,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-20 09:24:07,788 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2023-12-20 09:24:07,789 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 09:24:07,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 09:24:07 BoogieIcfgContainer [2023-12-20 09:24:07,791 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 09:24:07,791 INFO L158 Benchmark]: Toolchain (without parser) took 890787.60ms. Allocated memory was 289.4MB in the beginning and 359.7MB in the end (delta: 70.3MB). Free memory was 240.5MB in the beginning and 198.7MB in the end (delta: 41.8MB). Peak memory consumption was 113.6MB. Max. memory is 8.0GB. [2023-12-20 09:24:07,791 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 186.6MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 09:24:07,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.21ms. Allocated memory is still 289.4MB. Free memory was 240.4MB in the beginning and 229.3MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 09:24:07,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.87ms. Allocated memory is still 289.4MB. Free memory was 229.3MB in the beginning and 227.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 09:24:07,792 INFO L158 Benchmark]: Boogie Preprocessor took 57.09ms. Allocated memory is still 289.4MB. Free memory was 227.9MB in the beginning and 225.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 09:24:07,792 INFO L158 Benchmark]: RCFGBuilder took 301.27ms. Allocated memory is still 289.4MB. Free memory was 225.9MB in the beginning and 213.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 09:24:07,792 INFO L158 Benchmark]: TraceAbstraction took 890190.34ms. Allocated memory was 289.4MB in the beginning and 359.7MB in the end (delta: 70.3MB). Free memory was 213.2MB in the beginning and 198.7MB in the end (delta: 14.5MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. [2023-12-20 09:24:07,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 186.6MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.21ms. Allocated memory is still 289.4MB. Free memory was 240.4MB in the beginning and 229.3MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.87ms. Allocated memory is still 289.4MB. Free memory was 229.3MB in the beginning and 227.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 57.09ms. Allocated memory is still 289.4MB. Free memory was 227.9MB in the beginning and 225.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 301.27ms. Allocated memory is still 289.4MB. Free memory was 225.9MB in the beginning and 213.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 890190.34ms. Allocated memory was 289.4MB in the beginning and 359.7MB in the end (delta: 70.3MB). Free memory was 213.2MB in the beginning and 198.7MB in the end (delta: 14.5MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics [2023-12-20 09:24:07,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 137 NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was analyzing trace of length 281 with TraceHistMax 200,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 890.1s, OverallIterations: 10, TraceHistogramMax: 200, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 824 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 824 mSDsluCounter, 589 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 459 mSDsCounter, 328 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 805 IncrementalHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 328 mSolverCounterUnsat, 130 mSDtfsCounter, 805 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 826 GetRequests, 684 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=445occurred in iteration=9, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 198 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 54.8s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 398 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 1587 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1302 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 32001/33591 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown