/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-57.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:28:03,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:28:03,153 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:28:03,156 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:28:03,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:28:03,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:28:03,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:28:03,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:28:03,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:28:03,176 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:28:03,176 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:28:03,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:28:03,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:28:03,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:28:03,178 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:28:03,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:28:03,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:28:03,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:28:03,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:28:03,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:28:03,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:28:03,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:28:03,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:28:03,179 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:28:03,179 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:28:03,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:28:03,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:28:03,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:28:03,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:28:03,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:28:03,181 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:28:03,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:28:03,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:28:03,182 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:28:03,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:28:03,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:28:03,183 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:28:03,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:28:03,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:28:03,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:28:03,400 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:28:03,400 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:28:03,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-57.i [2023-12-19 12:28:04,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:28:04,564 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:28:04,565 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-57.i [2023-12-19 12:28:04,571 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d2b2c40/ff8775f8cfb84b7dae0fe4c18f9c965f/FLAGb33d87280 [2023-12-19 12:28:04,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d2b2c40/ff8775f8cfb84b7dae0fe4c18f9c965f [2023-12-19 12:28:04,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:28:04,587 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:28:04,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:28:04,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:28:04,593 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:28:04,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@558cc6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04, skipping insertion in model container [2023-12-19 12:28:04,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:28:04,736 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-57.i[916,929] [2023-12-19 12:28:04,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:28:04,813 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:28:04,830 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-57.i[916,929] [2023-12-19 12:28:04,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:28:04,878 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:28:04,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04 WrapperNode [2023-12-19 12:28:04,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:28:04,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:28:04,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:28:04,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:28:04,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,948 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 264 [2023-12-19 12:28:04,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:28:04,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:28:04,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:28:04,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:28:04,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,980 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 12:28:04,980 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,980 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:04,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:05,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:28:05,003 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:28:05,003 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:28:05,003 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:28:05,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (1/1) ... [2023-12-19 12:28:05,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:28:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:05,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 12:28:05,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 12:28:05,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:28:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:28:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:28:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:28:05,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:28:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:28:05,154 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:28:05,157 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:28:05,509 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:28:05,533 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:28:05,533 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:28:05,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:28:05 BoogieIcfgContainer [2023-12-19 12:28:05,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:28:05,535 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:28:05,535 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:28:05,543 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:28:05,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:28:04" (1/3) ... [2023-12-19 12:28:05,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb8c7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:28:05, skipping insertion in model container [2023-12-19 12:28:05,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:28:04" (2/3) ... [2023-12-19 12:28:05,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb8c7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:28:05, skipping insertion in model container [2023-12-19 12:28:05,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:28:05" (3/3) ... [2023-12-19 12:28:05,544 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-57.i [2023-12-19 12:28:05,556 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:28:05,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:28:05,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:28:05,596 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;@1e2b8dc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:28:05,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:28:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 64 states have (on average 1.515625) internal successors, (97), 65 states have internal predecessors, (97), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 12:28:05,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 12:28:05,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:05,615 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:05,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:05,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:05,620 INFO L85 PathProgramCache]: Analyzing trace with hash 935349993, now seen corresponding path program 1 times [2023-12-19 12:28:05,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:05,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285300418] [2023-12-19 12:28:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:05,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:05,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285300418] [2023-12-19 12:28:05,857 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 12:28:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318784535] [2023-12-19 12:28:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:05,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:05,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:05,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:05,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 12:28:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:06,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 12:28:06,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-12-19 12:28:06,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:28:06,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318784535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:28:06,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:28:06,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:28:06,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124239034] [2023-12-19 12:28:06,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:28:06,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:28:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:28:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:28:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:28:06,184 INFO L87 Difference]: Start difference. First operand has 103 states, 64 states have (on average 1.515625) internal successors, (97), 65 states have internal predecessors, (97), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-19 12:28:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:28:06,224 INFO L93 Difference]: Finished difference Result 203 states and 372 transitions. [2023-12-19 12:28:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:28:06,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) Word has length 223 [2023-12-19 12:28:06,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:28:06,233 INFO L225 Difference]: With dead ends: 203 [2023-12-19 12:28:06,233 INFO L226 Difference]: Without dead ends: 101 [2023-12-19 12:28:06,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:28:06,239 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:28:06,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:28:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-19 12:28:06,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-12-19 12:28:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 63 states have internal predecessors, (92), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 12:28:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 164 transitions. [2023-12-19 12:28:06,307 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 164 transitions. Word has length 223 [2023-12-19 12:28:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:28:06,307 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 164 transitions. [2023-12-19 12:28:06,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-19 12:28:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 164 transitions. [2023-12-19 12:28:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-19 12:28:06,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:06,316 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:06,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:06,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 12:28:06,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:06,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2074465649, now seen corresponding path program 1 times [2023-12-19 12:28:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:06,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722253736] [2023-12-19 12:28:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:06,588 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:28:06,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278741722] [2023-12-19 12:28:06,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:06,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:06,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:06,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:06,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 12:28:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:06,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:28:06,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 915 proven. 81 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2023-12-19 12:28:06,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:28:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 24 proven. 81 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-19 12:28:07,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:07,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722253736] [2023-12-19 12:28:07,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:28:07,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278741722] [2023-12-19 12:28:07,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278741722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:28:07,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:28:07,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 12:28:07,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121460957] [2023-12-19 12:28:07,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:28:07,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 12:28:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:28:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 12:28:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:28:07,183 INFO L87 Difference]: Start difference. First operand 101 states and 164 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-19 12:28:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:28:07,403 INFO L93 Difference]: Finished difference Result 222 states and 355 transitions. [2023-12-19 12:28:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:28:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 223 [2023-12-19 12:28:07,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:28:07,416 INFO L225 Difference]: With dead ends: 222 [2023-12-19 12:28:07,416 INFO L226 Difference]: Without dead ends: 122 [2023-12-19 12:28:07,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 438 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:28:07,421 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 70 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:28:07,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 304 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:28:07,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-19 12:28:07,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2023-12-19 12:28:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 71 states have internal predecessors, (97), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 12:28:07,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 185 transitions. [2023-12-19 12:28:07,457 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 185 transitions. Word has length 223 [2023-12-19 12:28:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:28:07,458 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 185 transitions. [2023-12-19 12:28:07,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2023-12-19 12:28:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 185 transitions. [2023-12-19 12:28:07,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-19 12:28:07,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:07,460 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:07,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:07,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 12:28:07,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:07,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash 972532047, now seen corresponding path program 1 times [2023-12-19 12:28:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389331804] [2023-12-19 12:28:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:07,699 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:28:07,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489274114] [2023-12-19 12:28:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:07,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:07,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:07,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 12:28:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:07,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:28:07,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1253 proven. 42 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2023-12-19 12:28:07,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:28:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-19 12:28:08,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389331804] [2023-12-19 12:28:08,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:28:08,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489274114] [2023-12-19 12:28:08,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489274114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:28:08,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:28:08,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-19 12:28:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965906043] [2023-12-19 12:28:08,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:28:08,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 12:28:08,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:28:08,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 12:28:08,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-19 12:28:08,119 INFO L87 Difference]: Start difference. First operand 117 states and 185 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-19 12:28:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:28:08,324 INFO L93 Difference]: Finished difference Result 229 states and 356 transitions. [2023-12-19 12:28:08,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 12:28:08,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 224 [2023-12-19 12:28:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:28:08,327 INFO L225 Difference]: With dead ends: 229 [2023-12-19 12:28:08,327 INFO L226 Difference]: Without dead ends: 125 [2023-12-19 12:28:08,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:28:08,328 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 145 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:28:08,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 258 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:28:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-19 12:28:08,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2023-12-19 12:28:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.3424657534246576) internal successors, (98), 74 states have internal predecessors, (98), 44 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-19 12:28:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 186 transitions. [2023-12-19 12:28:08,341 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 186 transitions. Word has length 224 [2023-12-19 12:28:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:28:08,342 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 186 transitions. [2023-12-19 12:28:08,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (50), 2 states have call predecessors, (50), 4 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2023-12-19 12:28:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 186 transitions. [2023-12-19 12:28:08,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-19 12:28:08,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:08,344 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:08,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:08,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:08,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:08,550 INFO L85 PathProgramCache]: Analyzing trace with hash -541964217, now seen corresponding path program 1 times [2023-12-19 12:28:08,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:08,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103697241] [2023-12-19 12:28:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:08,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:08,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:28:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84063664] [2023-12-19 12:28:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:08,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:08,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:08,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:08,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 12:28:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:08,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-19 12:28:08,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1293 proven. 54 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2023-12-19 12:28:09,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:28:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 51 proven. 54 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-19 12:28:09,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103697241] [2023-12-19 12:28:09,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:28:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84063664] [2023-12-19 12:28:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84063664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:28:09,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:28:09,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-12-19 12:28:09,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44944312] [2023-12-19 12:28:09,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:28:09,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:28:09,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:28:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:28:09,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:28:09,337 INFO L87 Difference]: Start difference. First operand 121 states and 186 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2023-12-19 12:28:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:28:09,932 INFO L93 Difference]: Finished difference Result 393 states and 598 transitions. [2023-12-19 12:28:09,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 12:28:09,933 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) Word has length 225 [2023-12-19 12:28:09,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:28:09,935 INFO L225 Difference]: With dead ends: 393 [2023-12-19 12:28:09,935 INFO L226 Difference]: Without dead ends: 285 [2023-12-19 12:28:09,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2023-12-19 12:28:09,936 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 473 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 12:28:09,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 657 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 12:28:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-19 12:28:09,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 190. [2023-12-19 12:28:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 110 states have (on average 1.2727272727272727) internal successors, (140), 110 states have internal predecessors, (140), 72 states have call successors, (72), 7 states have call predecessors, (72), 7 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-19 12:28:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 284 transitions. [2023-12-19 12:28:09,961 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 284 transitions. Word has length 225 [2023-12-19 12:28:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:28:09,961 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 284 transitions. [2023-12-19 12:28:09,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2023-12-19 12:28:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 284 transitions. [2023-12-19 12:28:09,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-19 12:28:09,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:09,963 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:09,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:10,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:10,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:10,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1146979525, now seen corresponding path program 1 times [2023-12-19 12:28:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:10,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880000543] [2023-12-19 12:28:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:10,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:10,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:28:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014396388] [2023-12-19 12:28:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:10,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:10,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:10,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:10,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 12:28:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:10,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 12:28:10,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:10,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1526 proven. 108 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-19 12:28:10,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:28:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-19 12:28:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880000543] [2023-12-19 12:28:11,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:28:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014396388] [2023-12-19 12:28:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014396388] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 12:28:11,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:28:11,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2023-12-19 12:28:11,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600911537] [2023-12-19 12:28:11,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:28:11,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 12:28:11,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:28:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 12:28:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-12-19 12:28:11,141 INFO L87 Difference]: Start difference. First operand 190 states and 284 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:28:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:28:12,596 INFO L93 Difference]: Finished difference Result 710 states and 1043 transitions. [2023-12-19 12:28:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 12:28:12,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 225 [2023-12-19 12:28:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:28:12,600 INFO L225 Difference]: With dead ends: 710 [2023-12-19 12:28:12,600 INFO L226 Difference]: Without dead ends: 602 [2023-12-19 12:28:12,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2023-12-19 12:28:12,601 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 633 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:28:12,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 918 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 12:28:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2023-12-19 12:28:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 401. [2023-12-19 12:28:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 251 states have (on average 1.3107569721115537) internal successors, (329), 253 states have internal predecessors, (329), 134 states have call successors, (134), 15 states have call predecessors, (134), 15 states have return successors, (134), 132 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-19 12:28:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 597 transitions. [2023-12-19 12:28:12,667 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 597 transitions. Word has length 225 [2023-12-19 12:28:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:28:12,668 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 597 transitions. [2023-12-19 12:28:12,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:28:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 597 transitions. [2023-12-19 12:28:12,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2023-12-19 12:28:12,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:12,670 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:12,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:12,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:12,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:12,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash 709156031, now seen corresponding path program 1 times [2023-12-19 12:28:12,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:12,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771353612] [2023-12-19 12:28:12,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:12,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:12,889 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:28:12,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942658267] [2023-12-19 12:28:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:12,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:12,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:12,891 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:12,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 12:28:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:13,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-19 12:28:13,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 833 proven. 84 refuted. 0 times theorem prover too weak. 1603 trivial. 0 not checked. [2023-12-19 12:28:13,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:28:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-19 12:28:13,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771353612] [2023-12-19 12:28:13,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:28:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942658267] [2023-12-19 12:28:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942658267] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:28:13,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:28:13,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-12-19 12:28:13,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164595035] [2023-12-19 12:28:13,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:28:13,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-19 12:28:13,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:28:13,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-19 12:28:13,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 12:28:13,392 INFO L87 Difference]: Start difference. First operand 401 states and 597 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-19 12:28:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:28:13,979 INFO L93 Difference]: Finished difference Result 1438 states and 2088 transitions. [2023-12-19 12:28:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-19 12:28:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 225 [2023-12-19 12:28:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:28:13,986 INFO L225 Difference]: With dead ends: 1438 [2023-12-19 12:28:13,986 INFO L226 Difference]: Without dead ends: 1123 [2023-12-19 12:28:13,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=206, Invalid=496, Unknown=0, NotChecked=0, Total=702 [2023-12-19 12:28:13,989 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 428 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 12:28:13,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 690 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 12:28:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2023-12-19 12:28:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 738. [2023-12-19 12:28:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 471 states have (on average 1.2887473460721868) internal successors, (607), 475 states have internal predecessors, (607), 232 states have call successors, (232), 34 states have call predecessors, (232), 34 states have return successors, (232), 228 states have call predecessors, (232), 232 states have call successors, (232) [2023-12-19 12:28:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1071 transitions. [2023-12-19 12:28:14,100 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1071 transitions. Word has length 225 [2023-12-19 12:28:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:28:14,100 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1071 transitions. [2023-12-19 12:28:14,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2023-12-19 12:28:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1071 transitions. [2023-12-19 12:28:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:28:14,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:14,102 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:14,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:14,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:14,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1800364658, now seen corresponding path program 1 times [2023-12-19 12:28:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:14,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674737281] [2023-12-19 12:28:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:14,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:14,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:28:14,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715569426] [2023-12-19 12:28:14,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:14,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:14,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:14,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:14,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 12:28:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:14,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 12:28:14,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-19 12:28:14,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:28:14,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:28:14,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674737281] [2023-12-19 12:28:14,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:28:14,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715569426] [2023-12-19 12:28:14,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715569426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:28:14,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:28:14,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:28:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524906773] [2023-12-19 12:28:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:28:14,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 12:28:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:28:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 12:28:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:28:14,683 INFO L87 Difference]: Start difference. First operand 738 states and 1071 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:28:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:28:14,859 INFO L93 Difference]: Finished difference Result 2021 states and 2943 transitions. [2023-12-19 12:28:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 12:28:14,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-12-19 12:28:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:28:14,871 INFO L225 Difference]: With dead ends: 2021 [2023-12-19 12:28:14,871 INFO L226 Difference]: Without dead ends: 1373 [2023-12-19 12:28:14,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 12:28:14,874 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 47 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:28:14,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 300 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:28:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2023-12-19 12:28:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1329. [2023-12-19 12:28:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 838 states have (on average 1.266109785202864) internal successors, (1061), 846 states have internal predecessors, (1061), 428 states have call successors, (428), 62 states have call predecessors, (428), 62 states have return successors, (428), 420 states have call predecessors, (428), 428 states have call successors, (428) [2023-12-19 12:28:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1917 transitions. [2023-12-19 12:28:15,030 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1917 transitions. Word has length 226 [2023-12-19 12:28:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:28:15,030 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 1917 transitions. [2023-12-19 12:28:15,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:28:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1917 transitions. [2023-12-19 12:28:15,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:28:15,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:28:15,032 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:28:15,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 12:28:15,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:15,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:28:15,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:28:15,238 INFO L85 PathProgramCache]: Analyzing trace with hash 965208786, now seen corresponding path program 1 times [2023-12-19 12:28:15,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:28:15,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931275203] [2023-12-19 12:28:15,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:15,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:28:15,257 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:28:15,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420832541] [2023-12-19 12:28:15,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:28:15,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:28:15,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:28:15,261 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:28:15,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 12:28:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:28:15,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-19 12:28:15,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:28:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1669 proven. 186 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2023-12-19 12:28:26,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:29:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-19 12:29:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:29:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931275203] [2023-12-19 12:29:27,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:29:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420832541] [2023-12-19 12:29:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420832541] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 12:29:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:29:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22] total 32 [2023-12-19 12:29:27,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055749875] [2023-12-19 12:29:27,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:29:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 12:29:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:29:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 12:29:27,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2023-12-19 12:29:27,120 INFO L87 Difference]: Start difference. First operand 1329 states and 1917 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:29:33,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:29:40,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:30:12,659 WARN L293 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 185 DAG size of output: 178 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:30:24,864 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 207 DAG size of output: 194 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:30:35,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:30:40,589 WARN L293 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 198 DAG size of output: 191 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:31:00,888 WARN L293 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 205 DAG size of output: 187 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:31:10,820 WARN L293 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 210 DAG size of output: 197 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:31:18,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:31:22,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:31:26,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:31:35,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:31:37,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:31:41,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:31:45,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:31:59,083 WARN L293 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 176 DAG size of output: 174 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:32:16,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:32:20,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:32:23,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:32:27,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:32:31,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:32:34,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:32:38,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:32:40,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:33:01,214 WARN L293 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 206 DAG size of output: 188 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:33:08,161 WARN L293 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 208 DAG size of output: 195 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:33:23,133 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 173 DAG size of output: 166 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 12:33:38,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:33:42,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:33:45,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:33:49,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:33:53,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:33:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:33:54,156 INFO L93 Difference]: Finished difference Result 2975 states and 4237 transitions. [2023-12-19 12:33:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-19 12:33:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-12-19 12:33:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:33:54,168 INFO L225 Difference]: With dead ends: 2975 [2023-12-19 12:33:54,168 INFO L226 Difference]: Without dead ends: 2040 [2023-12-19 12:33:54,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 181.0s TimeCoverageRelationStatistics Valid=1014, Invalid=4684, Unknown=2, NotChecked=0, Total=5700 [2023-12-19 12:33:54,172 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 786 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 59 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.4s IncrementalHoareTripleChecker+Time [2023-12-19 12:33:54,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1079 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 809 Invalid, 20 Unknown, 0 Unchecked, 92.4s Time] [2023-12-19 12:33:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2023-12-19 12:33:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1370. [2023-12-19 12:33:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 879 states have (on average 1.2787258248009101) internal successors, (1124), 887 states have internal predecessors, (1124), 428 states have call successors, (428), 62 states have call predecessors, (428), 62 states have return successors, (428), 420 states have call predecessors, (428), 428 states have call successors, (428) [2023-12-19 12:33:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1980 transitions. [2023-12-19 12:33:54,369 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1980 transitions. Word has length 226 [2023-12-19 12:33:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:33:54,369 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1980 transitions. [2023-12-19 12:33:54,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:33:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1980 transitions. [2023-12-19 12:33:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:33:54,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:33:54,371 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:33:54,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 12:33:54,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-19 12:33:54,572 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:33:54,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:33:54,573 INFO L85 PathProgramCache]: Analyzing trace with hash 572181776, now seen corresponding path program 1 times [2023-12-19 12:33:54,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:33:54,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395396900] [2023-12-19 12:33:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:33:54,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:33:54,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:33:54,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994523284] [2023-12-19 12:33:54,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:33:54,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:33:54,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:33:54,600 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:33:54,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 12:33:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:33:54,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-19 12:33:54,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:34:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1553 proven. 192 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-12-19 12:34:05,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:34:46,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-19 12:34:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:34:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395396900] [2023-12-19 12:34:46,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:34:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994523284] [2023-12-19 12:34:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994523284] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 12:34:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:34:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [22] total 32 [2023-12-19 12:34:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781690128] [2023-12-19 12:34:46,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:34:46,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-19 12:34:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:34:46,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-19 12:34:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=795, Unknown=0, NotChecked=0, Total=992 [2023-12-19 12:34:46,150 INFO L87 Difference]: Start difference. First operand 1370 states and 1980 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:35:43,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:35:45,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:35:48,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:35:58,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:36:00,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:36:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:36:15,344 INFO L93 Difference]: Finished difference Result 2937 states and 4197 transitions. [2023-12-19 12:36:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-19 12:36:15,345 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-12-19 12:36:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:36:15,351 INFO L225 Difference]: With dead ends: 2937 [2023-12-19 12:36:15,351 INFO L226 Difference]: Without dead ends: 1961 [2023-12-19 12:36:15,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 70.8s TimeCoverageRelationStatistics Valid=848, Invalid=3981, Unknown=1, NotChecked=0, Total=4830 [2023-12-19 12:36:15,356 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 488 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 48 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2023-12-19 12:36:15,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1290 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 946 Invalid, 5 Unknown, 0 Unchecked, 26.1s Time] [2023-12-19 12:36:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2023-12-19 12:36:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1387. [2023-12-19 12:36:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 896 states have (on average 1.2834821428571428) internal successors, (1150), 904 states have internal predecessors, (1150), 428 states have call successors, (428), 62 states have call predecessors, (428), 62 states have return successors, (428), 420 states have call predecessors, (428), 428 states have call successors, (428) [2023-12-19 12:36:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2006 transitions. [2023-12-19 12:36:15,535 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2006 transitions. Word has length 226 [2023-12-19 12:36:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:36:15,536 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 2006 transitions. [2023-12-19 12:36:15,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:36:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2006 transitions. [2023-12-19 12:36:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:36:15,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:36:15,538 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:36:15,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-19 12:36:15,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:36:15,750 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:36:15,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:36:15,751 INFO L85 PathProgramCache]: Analyzing trace with hash 695057388, now seen corresponding path program 1 times [2023-12-19 12:36:15,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:36:15,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463679569] [2023-12-19 12:36:15,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:36:15,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:36:15,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:36:15,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101900789] [2023-12-19 12:36:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:36:15,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:36:15,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:36:15,778 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:36:15,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 12:36:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:36:15,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 12:36:15,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:36:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1547 proven. 201 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-12-19 12:36:16,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:36:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-19 12:36:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:36:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463679569] [2023-12-19 12:36:17,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:36:17,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101900789] [2023-12-19 12:36:17,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101900789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:36:17,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:36:17,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2023-12-19 12:36:17,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631386842] [2023-12-19 12:36:17,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:36:17,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 12:36:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:36:17,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 12:36:17,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2023-12-19 12:36:17,093 INFO L87 Difference]: Start difference. First operand 1387 states and 2006 transitions. Second operand has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) [2023-12-19 12:36:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:36:23,010 INFO L93 Difference]: Finished difference Result 8349 states and 11519 transitions. [2023-12-19 12:36:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-19 12:36:23,010 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) Word has length 226 [2023-12-19 12:36:23,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:36:23,033 INFO L225 Difference]: With dead ends: 8349 [2023-12-19 12:36:23,033 INFO L226 Difference]: Without dead ends: 7058 [2023-12-19 12:36:23,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3984 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2497, Invalid=6815, Unknown=0, NotChecked=0, Total=9312 [2023-12-19 12:36:23,040 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 2830 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 2252 mSolverCounterSat, 1558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 3810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1558 IncrementalHoareTripleChecker+Valid, 2252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 12:36:23,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2864 Valid, 1242 Invalid, 3810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1558 Valid, 2252 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 12:36:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7058 states. [2023-12-19 12:36:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7058 to 3302. [2023-12-19 12:36:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3302 states, 2171 states have (on average 1.2620912022109627) internal successors, (2740), 2209 states have internal predecessors, (2740), 952 states have call successors, (952), 178 states have call predecessors, (952), 178 states have return successors, (952), 914 states have call predecessors, (952), 952 states have call successors, (952) [2023-12-19 12:36:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3302 states to 3302 states and 4644 transitions. [2023-12-19 12:36:23,674 INFO L78 Accepts]: Start accepts. Automaton has 3302 states and 4644 transitions. Word has length 226 [2023-12-19 12:36:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:36:23,674 INFO L495 AbstractCegarLoop]: Abstraction has 3302 states and 4644 transitions. [2023-12-19 12:36:23,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 5 states have call successors, (72), 4 states have call predecessors, (72), 7 states have return successors, (72), 5 states have call predecessors, (72), 5 states have call successors, (72) [2023-12-19 12:36:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3302 states and 4644 transitions. [2023-12-19 12:36:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:36:23,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:36:23,676 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:36:23,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-19 12:36:23,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-19 12:36:23,882 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:36:23,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:36:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -114289238, now seen corresponding path program 1 times [2023-12-19 12:36:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:36:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768190992] [2023-12-19 12:36:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:36:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:36:23,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:36:23,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456420892] [2023-12-19 12:36:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:36:23,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:36:23,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:36:23,910 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:36:23,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 12:36:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:36:24,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-19 12:36:24,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:36:25,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1669 proven. 267 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-12-19 12:36:25,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:37:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-19 12:37:03,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:37:03,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768190992] [2023-12-19 12:37:03,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:37:03,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456420892] [2023-12-19 12:37:03,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456420892] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 12:37:03,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:37:03,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 36 [2023-12-19 12:37:03,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572303710] [2023-12-19 12:37:03,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:37:03,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:37:03,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:37:03,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:37:03,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1025, Unknown=2, NotChecked=0, Total=1260 [2023-12-19 12:37:03,764 INFO L87 Difference]: Start difference. First operand 3302 states and 4644 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:37:52,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:37:56,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:02,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:31,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:35,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:36,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:40,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:42,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:45,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:49,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:38:51,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:14,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:15,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:19,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:20,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:25,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.68s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:27,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:29,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:31,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 12:39:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:39:58,350 INFO L93 Difference]: Finished difference Result 9566 states and 13367 transitions. [2023-12-19 12:39:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 12:39:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) Word has length 226 [2023-12-19 12:39:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:39:58,372 INFO L225 Difference]: With dead ends: 9566 [2023-12-19 12:39:58,373 INFO L226 Difference]: Without dead ends: 8026 [2023-12-19 12:39:58,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2236 ImplicationChecksByTransitivity, 124.0s TimeCoverageRelationStatistics Valid=896, Invalid=5243, Unknown=23, NotChecked=0, Total=6162 [2023-12-19 12:39:58,378 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 799 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 24 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.0s IncrementalHoareTripleChecker+Time [2023-12-19 12:39:58,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1462 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1074 Invalid, 17 Unknown, 0 Unchecked, 67.0s Time] [2023-12-19 12:39:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2023-12-19 12:39:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 3368. [2023-12-19 12:39:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2237 states have (on average 1.2655341975860528) internal successors, (2831), 2275 states have internal predecessors, (2831), 952 states have call successors, (952), 178 states have call predecessors, (952), 178 states have return successors, (952), 914 states have call predecessors, (952), 952 states have call successors, (952) [2023-12-19 12:39:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4735 transitions. [2023-12-19 12:39:58,913 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4735 transitions. Word has length 226 [2023-12-19 12:39:58,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:39:58,914 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 4735 transitions. [2023-12-19 12:39:58,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:39:58,914 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4735 transitions. [2023-12-19 12:39:58,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:39:58,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:39:58,915 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:39:58,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 12:39:59,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-19 12:39:59,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:39:59,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:39:59,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1702637140, now seen corresponding path program 1 times [2023-12-19 12:39:59,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:39:59,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158372113] [2023-12-19 12:39:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:39:59,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:39:59,144 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:39:59,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630290771] [2023-12-19 12:39:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:39:59,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:39:59,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:39:59,154 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:39:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 12:39:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:39:59,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-19 12:39:59,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:40:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1520 proven. 195 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-12-19 12:40:00,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:40:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 57 proven. 48 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-19 12:40:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:40:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158372113] [2023-12-19 12:40:01,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:40:01,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630290771] [2023-12-19 12:40:01,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630290771] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:40:01,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:40:01,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 24 [2023-12-19 12:40:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732652514] [2023-12-19 12:40:01,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:40:01,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 12:40:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:40:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 12:40:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-12-19 12:40:01,932 INFO L87 Difference]: Start difference. First operand 3368 states and 4735 transitions. Second operand has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 23 states have internal predecessors, (112), 7 states have call successors, (72), 6 states have call predecessors, (72), 10 states have return successors, (72), 7 states have call predecessors, (72), 7 states have call successors, (72) [2023-12-19 12:40:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:40:05,570 INFO L93 Difference]: Finished difference Result 8727 states and 12070 transitions. [2023-12-19 12:40:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-19 12:40:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 23 states have internal predecessors, (112), 7 states have call successors, (72), 6 states have call predecessors, (72), 10 states have return successors, (72), 7 states have call predecessors, (72), 7 states have call successors, (72) Word has length 226 [2023-12-19 12:40:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:40:05,586 INFO L225 Difference]: With dead ends: 8727 [2023-12-19 12:40:05,586 INFO L226 Difference]: Without dead ends: 5507 [2023-12-19 12:40:05,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=686, Invalid=2506, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 12:40:05,593 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 869 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 12:40:05,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 992 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 12:40:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2023-12-19 12:40:06,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 2873. [2023-12-19 12:40:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 1970 states have (on average 1.2766497461928934) internal successors, (2515), 1994 states have internal predecessors, (2515), 748 states have call successors, (748), 154 states have call predecessors, (748), 154 states have return successors, (748), 724 states have call predecessors, (748), 748 states have call successors, (748) [2023-12-19 12:40:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4011 transitions. [2023-12-19 12:40:06,215 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4011 transitions. Word has length 226 [2023-12-19 12:40:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:40:06,215 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 4011 transitions. [2023-12-19 12:40:06,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 23 states have internal predecessors, (112), 7 states have call successors, (72), 6 states have call predecessors, (72), 10 states have return successors, (72), 7 states have call predecessors, (72), 7 states have call successors, (72) [2023-12-19 12:40:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4011 transitions. [2023-12-19 12:40:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:40:06,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:40:06,217 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:40:06,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 12:40:06,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-19 12:40:06,422 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:40:06,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:40:06,423 INFO L85 PathProgramCache]: Analyzing trace with hash 381932607, now seen corresponding path program 1 times [2023-12-19 12:40:06,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:40:06,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085408464] [2023-12-19 12:40:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:40:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:40:06,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:40:06,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293956950] [2023-12-19 12:40:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:40:06,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:40:06,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:40:06,442 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:40:06,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 12:40:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:40:06,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-19 12:40:06,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:40:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1289 proven. 48 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2023-12-19 12:40:07,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:40:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 57 proven. 48 refuted. 0 times theorem prover too weak. 2415 trivial. 0 not checked. [2023-12-19 12:40:07,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:40:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085408464] [2023-12-19 12:40:07,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:40:07,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293956950] [2023-12-19 12:40:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293956950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:40:07,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:40:07,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2023-12-19 12:40:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2952856] [2023-12-19 12:40:07,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:40:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 12:40:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:40:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 12:40:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-12-19 12:40:07,707 INFO L87 Difference]: Start difference. First operand 2873 states and 4011 transitions. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2023-12-19 12:40:11,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:40:11,658 INFO L93 Difference]: Finished difference Result 7173 states and 9932 transitions. [2023-12-19 12:40:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-19 12:40:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) Word has length 226 [2023-12-19 12:40:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:40:11,670 INFO L225 Difference]: With dead ends: 7173 [2023-12-19 12:40:11,670 INFO L226 Difference]: Without dead ends: 5093 [2023-12-19 12:40:11,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=670, Invalid=2300, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 12:40:11,675 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 872 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 12:40:11,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1139 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 12:40:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5093 states. [2023-12-19 12:40:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5093 to 3669. [2023-12-19 12:40:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 2504 states have (on average 1.259185303514377) internal successors, (3153), 2539 states have internal predecessors, (3153), 957 states have call successors, (957), 207 states have call predecessors, (957), 207 states have return successors, (957), 922 states have call predecessors, (957), 957 states have call successors, (957) [2023-12-19 12:40:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 5067 transitions. [2023-12-19 12:40:12,491 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 5067 transitions. Word has length 226 [2023-12-19 12:40:12,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:40:12,492 INFO L495 AbstractCegarLoop]: Abstraction has 3669 states and 5067 transitions. [2023-12-19 12:40:12,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (72), 3 states have call predecessors, (72), 5 states have return successors, (72), 4 states have call predecessors, (72), 4 states have call successors, (72) [2023-12-19 12:40:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 5067 transitions. [2023-12-19 12:40:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-12-19 12:40:12,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:40:12,494 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:40:12,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 12:40:12,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 12:40:12,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:40:12,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:40:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash -453760415, now seen corresponding path program 1 times [2023-12-19 12:40:12,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:40:12,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764798869] [2023-12-19 12:40:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:40:12,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:40:12,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:40:12,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090699039] [2023-12-19 12:40:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:40:12,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:40:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:40:12,734 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:40:12,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 12:40:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:40:12,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-19 12:40:12,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:40:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1547 proven. 147 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-12-19 12:40:14,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:40:48,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:40:48,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764798869] [2023-12-19 12:40:48,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:40:48,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090699039] [2023-12-19 12:40:48,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090699039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 12:40:48,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:40:48,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-12-19 12:40:48,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574002996] [2023-12-19 12:40:48,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-19 12:40:48,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 12:40:48,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:40:48,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 12:40:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=734, Unknown=2, NotChecked=0, Total=930 [2023-12-19 12:40:48,817 INFO L87 Difference]: Start difference. First operand 3669 states and 5067 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (36), 4 states have call predecessors, (36), 6 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-19 12:40:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:40:55,057 INFO L93 Difference]: Finished difference Result 6146 states and 8525 transitions. [2023-12-19 12:40:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-19 12:40:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (36), 4 states have call predecessors, (36), 6 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) Word has length 226 [2023-12-19 12:40:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:40:55,066 INFO L225 Difference]: With dead ends: 6146 [2023-12-19 12:40:55,066 INFO L226 Difference]: Without dead ends: 3832 [2023-12-19 12:40:55,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=609, Invalid=2359, Unknown=2, NotChecked=0, Total=2970 [2023-12-19 12:40:55,073 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 449 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 12:40:55,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1004 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 12:40:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2023-12-19 12:40:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3676. [2023-12-19 12:40:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2511 states have (on average 1.2588610115491836) internal successors, (3161), 2546 states have internal predecessors, (3161), 957 states have call successors, (957), 207 states have call predecessors, (957), 207 states have return successors, (957), 922 states have call predecessors, (957), 957 states have call successors, (957) [2023-12-19 12:40:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5075 transitions. [2023-12-19 12:40:55,875 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5075 transitions. Word has length 226 [2023-12-19 12:40:55,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:40:55,875 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 5075 transitions. [2023-12-19 12:40:55,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 18 states have internal predecessors, (64), 4 states have call successors, (36), 4 states have call predecessors, (36), 6 states have return successors, (36), 4 states have call predecessors, (36), 4 states have call successors, (36) [2023-12-19 12:40:55,875 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5075 transitions. [2023-12-19 12:40:55,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-12-19 12:40:55,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:40:55,877 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:40:55,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 12:40:56,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:40:56,079 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:40:56,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:40:56,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1907890240, now seen corresponding path program 1 times [2023-12-19 12:40:56,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:40:56,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095707586] [2023-12-19 12:40:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:40:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:40:56,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:40:56,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694558545] [2023-12-19 12:40:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:40:56,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:40:56,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:40:56,104 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:40:56,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 12:40:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:40:56,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 12:40:56,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:41:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 1526 proven. 108 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-19 12:41:03,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:41:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2520 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2023-12-19 12:41:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:41:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095707586] [2023-12-19 12:41:35,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:41:35,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694558545] [2023-12-19 12:41:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694558545] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 12:41:35,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 12:41:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 25 [2023-12-19 12:41:35,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092369425] [2023-12-19 12:41:35,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:41:35,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-19 12:41:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:41:35,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-19 12:41:35,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2023-12-19 12:41:35,268 INFO L87 Difference]: Start difference. First operand 3676 states and 5075 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 1 states have call predecessors, (36), 1 states have call successors, (36) [2023-12-19 12:41:44,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Real, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] Received shutdown request... [2023-12-19 12:42:27,554 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 12:42:27,554 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 12:42:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-19 12:42:27,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=239, Invalid=816, Unknown=1, NotChecked=0, Total=1056 [2023-12-19 12:42:27,585 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 295 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2023-12-19 12:42:27,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 969 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 648 Invalid, 1 Unknown, 0 Unchecked, 21.8s Time] [2023-12-19 12:42:27,586 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 12:42:27,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 12:42:27,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-19 12:42:27,793 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (3676states) and FLOYD_HOARE automaton (currently 12 states, 11 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-12-2-2-3-6-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ATOM-1 context. [2023-12-19 12:42:27,798 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:42:27,800 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 12:42:27,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:42:27 BoogieIcfgContainer [2023-12-19 12:42:27,802 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 12:42:27,803 INFO L158 Benchmark]: Toolchain (without parser) took 863215.70ms. Allocated memory was 299.9MB in the beginning and 1.2GB in the end (delta: 945.8MB). Free memory was 263.5MB in the beginning and 491.4MB in the end (delta: -227.9MB). Peak memory consumption was 719.5MB. Max. memory is 8.0GB. [2023-12-19 12:42:27,804 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:42:27,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.31ms. Allocated memory is still 299.9MB. Free memory was 263.2MB in the beginning and 245.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 12:42:27,805 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.75ms. Allocated memory is still 299.9MB. Free memory was 245.8MB in the beginning and 239.8MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-19 12:42:27,807 INFO L158 Benchmark]: Boogie Preprocessor took 53.57ms. Allocated memory is still 299.9MB. Free memory was 239.8MB in the beginning and 231.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-19 12:42:27,807 INFO L158 Benchmark]: RCFGBuilder took 530.55ms. Allocated memory is still 299.9MB. Free memory was 231.4MB in the beginning and 245.3MB in the end (delta: -13.9MB). Peak memory consumption was 21.8MB. Max. memory is 8.0GB. [2023-12-19 12:42:27,807 INFO L158 Benchmark]: TraceAbstraction took 862267.34ms. Allocated memory was 299.9MB in the beginning and 1.2GB in the end (delta: 945.8MB). Free memory was 244.8MB in the beginning and 491.4MB in the end (delta: -246.6MB). Peak memory consumption was 699.7MB. Max. memory is 8.0GB. [2023-12-19 12:42:27,808 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 291.31ms. Allocated memory is still 299.9MB. Free memory was 263.2MB in the beginning and 245.8MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.75ms. Allocated memory is still 299.9MB. Free memory was 245.8MB in the beginning and 239.8MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.57ms. Allocated memory is still 299.9MB. Free memory was 239.8MB in the beginning and 231.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 530.55ms. Allocated memory is still 299.9MB. Free memory was 231.4MB in the beginning and 245.3MB in the end (delta: -13.9MB). Peak memory consumption was 21.8MB. Max. memory is 8.0GB. * TraceAbstraction took 862267.34ms. Allocated memory was 299.9MB in the beginning and 1.2GB in the end (delta: 945.8MB). Free memory was 244.8MB in the beginning and 491.4MB in the end (delta: -246.6MB). Peak memory consumption was 699.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (3676states) and FLOYD_HOARE automaton (currently 12 states, 11 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-12-2-2-3-6-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 862.2s, OverallIterations: 15, TraceHistogramMax: 36, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 606.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 mSolverCounterUnknown, 9292 SdHoareTripleChecker+Valid, 216.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9184 mSDsluCounter, 12465 SdHoareTripleChecker+Invalid, 214.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10417 mSDsCounter, 3206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11940 IncrementalHoareTripleChecker+Invalid, 15189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3206 mSolverCounterUnsat, 2048 mSDtfsCounter, 11940 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6451 GetRequests, 5850 SyntacticMatches, 2 SemanticMatches, 598 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12707 ImplicationChecksByTransitivity, 437.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3676occurred in iteration=14, InterpolantAutomatonStates: 422, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 14606 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 245.6s InterpolantComputationTime, 3603 NumberOfCodeBlocks, 3603 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6058 ConstructedInterpolants, 30 QuantifiedInterpolants, 56695 SizeOfPredicates, 197 NumberOfNonLiveVariables, 7782 ConjunctsInSsa, 352 ConjunctsInUnsatCore, 27 InterpolantComputations, 7 PerfectInterpolantSequences, 65928/68040 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