/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_loopvsstraightlinecode_50-1loop_file-28.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:57:52,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:57:52,766 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:57:52,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:57:52,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:57:52,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:57:52,792 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:57:52,793 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:57:52,793 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:57:52,796 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:57:52,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:57:52,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:57:52,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:57:52,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:57:52,798 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:57:52,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:57:52,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:57:52,798 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:57:52,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:57:52,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:57:52,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:57:52,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:57:52,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:57:52,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:57:52,800 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:57:52,800 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:57:52,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:57:52,801 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:57:52,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:57:52,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:57:52,802 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:57:52,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:57:52,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:57:52,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:57:52,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:57:52,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:57:52,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:57:52,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:57:52,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:57:52,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:57:52,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:57:52,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:57:52,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:57:52,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:57:52,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:57:52,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:57:53,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:57:53,002 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:57:53,002 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:57:53,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-28.i [2023-12-15 20:57:54,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:57:54,150 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:57:54,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-1loop_file-28.i [2023-12-15 20:57:54,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1417ae80a/0efa0246d92746a08c5154ea05850121/FLAGf9197acf9 [2023-12-15 20:57:54,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1417ae80a/0efa0246d92746a08c5154ea05850121 [2023-12-15 20:57:54,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:57:54,177 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:57:54,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:57:54,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:57:54,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:57:54,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b325c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54, skipping insertion in model container [2023-12-15 20:57:54,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,202 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:57:54,301 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_loopvsstraightlinecode_50-1loop_file-28.i[915,928] [2023-12-15 20:57:54,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:57:54,357 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:57:54,366 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_loopvsstraightlinecode_50-1loop_file-28.i[915,928] [2023-12-15 20:57:54,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:57:54,407 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:57:54,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54 WrapperNode [2023-12-15 20:57:54,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:57:54,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:57:54,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:57:54,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:57:54,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,474 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 173 [2023-12-15 20:57:54,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:57:54,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:57:54,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:57:54,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:57:54,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,509 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]. [2023-12-15 20:57:54,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:57:54,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:57:54,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:57:54,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:57:54,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (1/1) ... [2023-12-15 20:57:54,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:57:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:57:54,586 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) [2023-12-15 20:57:54,587 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 [2023-12-15 20:57:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:57:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:57:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:57:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:57:54,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:57:54,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:57:54,659 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:57:54,662 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:57:54,976 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:57:54,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:57:54,994 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:57:54,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:57:54 BoogieIcfgContainer [2023-12-15 20:57:54,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:57:54,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:57:54,996 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:57:54,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:57:54,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:57:54" (1/3) ... [2023-12-15 20:57:54,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4b3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:57:54, skipping insertion in model container [2023-12-15 20:57:54,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:57:54" (2/3) ... [2023-12-15 20:57:54,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d4b3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:57:54, skipping insertion in model container [2023-12-15 20:57:54,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:57:54" (3/3) ... [2023-12-15 20:57:55,000 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-1loop_file-28.i [2023-12-15 20:57:55,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:57:55,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:57:55,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:57:55,059 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;@36d859db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:57:55,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:57:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-15 20:57:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:57:55,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:57:55,084 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:57:55,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:57:55,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:57:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1532294613, now seen corresponding path program 1 times [2023-12-15 20:57:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:57:55,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728422227] [2023-12-15 20:57:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:57:55,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:57:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:57:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:57:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728422227] [2023-12-15 20:57:55,287 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:57:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609397033] [2023-12-15 20:57:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:57:55,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:57:55,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:57:55,290 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) [2023-12-15 20:57:55,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:57:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:57:55,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:57:55,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:57:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-12-15 20:57:55,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:57:55,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609397033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:57:55,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:57:55,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:57:55,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4545781] [2023-12-15 20:57:55,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:57:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:57:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:57:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:57:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:57:55,491 INFO L87 Difference]: Start difference. First operand has 69 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 45 states have internal predecessors, (63), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-15 20:57:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:57:55,526 INFO L93 Difference]: Finished difference Result 137 states and 235 transitions. [2023-12-15 20:57:55,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:57:55,528 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 142 [2023-12-15 20:57:55,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:57:55,535 INFO L225 Difference]: With dead ends: 137 [2023-12-15 20:57:55,535 INFO L226 Difference]: Without dead ends: 67 [2023-12-15 20:57:55,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:57:55,540 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:57:55,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:57:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-12-15 20:57:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-12-15 20:57:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-15 20:57:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 102 transitions. [2023-12-15 20:57:55,568 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 102 transitions. Word has length 142 [2023-12-15 20:57:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:57:55,568 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 102 transitions. [2023-12-15 20:57:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2023-12-15 20:57:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 102 transitions. [2023-12-15 20:57:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:57:55,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:57:55,570 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:57:55,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:57:55,778 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 [2023-12-15 20:57:55,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:57:55,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:57:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash 19033715, now seen corresponding path program 1 times [2023-12-15 20:57:55,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:57:55,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541120828] [2023-12-15 20:57:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:57:55,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:57:55,833 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:57:55,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715222274] [2023-12-15 20:57:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:57:55,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:57:55,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:57:55,837 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) [2023-12-15 20:57:55,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:57:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:57:55,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:57:55,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:57:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:57:56,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:57:56,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:57:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541120828] [2023-12-15 20:57:56,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:57:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715222274] [2023-12-15 20:57:56,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715222274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:57:56,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:57:56,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:57:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210814351] [2023-12-15 20:57:56,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:57:56,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 20:57:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:57:56,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 20:57:56,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:57:56,166 INFO L87 Difference]: Start difference. First operand 67 states and 102 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:57:56,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:57:56,403 INFO L93 Difference]: Finished difference Result 300 states and 458 transitions. [2023-12-15 20:57:56,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:57:56,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:57:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:57:56,410 INFO L225 Difference]: With dead ends: 300 [2023-12-15 20:57:56,410 INFO L226 Difference]: Without dead ends: 234 [2023-12-15 20:57:56,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:57:56,414 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 288 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:57:56,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 365 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:57:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-15 20:57:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 135. [2023-12-15 20:57:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 88 states have internal predecessors, (118), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-12-15 20:57:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 206 transitions. [2023-12-15 20:57:56,455 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 206 transitions. Word has length 142 [2023-12-15 20:57:56,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:57:56,457 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 206 transitions. [2023-12-15 20:57:56,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:57:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 206 transitions. [2023-12-15 20:57:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:57:56,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:57:56,463 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:57:56,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:57:56,671 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 [2023-12-15 20:57:56,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:57:56,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:57:56,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1794041077, now seen corresponding path program 1 times [2023-12-15 20:57:56,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:57:56,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788499575] [2023-12-15 20:57:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:57:56,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:57:56,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:57:56,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067449003] [2023-12-15 20:57:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:57:56,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:57:56,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:57:56,715 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) [2023-12-15 20:57:56,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:57:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:57:56,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 20:57:56,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:04,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:04,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788499575] [2023-12-15 20:58:04,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:04,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067449003] [2023-12-15 20:58:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067449003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:04,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:58:04,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510089111] [2023-12-15 20:58:04,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:04,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:58:04,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:04,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:58:04,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:58:04,152 INFO L87 Difference]: Start difference. First operand 135 states and 206 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:05,206 INFO L93 Difference]: Finished difference Result 375 states and 559 transitions. [2023-12-15 20:58:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 20:58:05,206 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:05,208 INFO L225 Difference]: With dead ends: 375 [2023-12-15 20:58:05,208 INFO L226 Difference]: Without dead ends: 241 [2023-12-15 20:58:05,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:58:05,209 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 438 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:05,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 518 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:58:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-12-15 20:58:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 165. [2023-12-15 20:58:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 109 states have (on average 1.3211009174311927) internal successors, (144), 110 states have internal predecessors, (144), 52 states have call successors, (52), 3 states have call predecessors, (52), 3 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 20:58:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2023-12-15 20:58:05,223 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 142 [2023-12-15 20:58:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:05,223 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2023-12-15 20:58:05,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2023-12-15 20:58:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:58:05,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:05,225 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:05,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:05,432 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 [2023-12-15 20:58:05,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:05,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash -661024655, now seen corresponding path program 1 times [2023-12-15 20:58:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:05,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695795487] [2023-12-15 20:58:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:05,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:05,453 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:05,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912581099] [2023-12-15 20:58:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:05,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:05,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:05,462 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) [2023-12-15 20:58:05,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:58:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:05,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:58:05,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:10,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:10,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:10,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695795487] [2023-12-15 20:58:10,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:10,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912581099] [2023-12-15 20:58:10,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912581099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:10,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:10,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:58:10,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146371103] [2023-12-15 20:58:10,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:10,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:58:10,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:58:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:58:10,990 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:11,993 INFO L93 Difference]: Finished difference Result 474 states and 697 transitions. [2023-12-15 20:58:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 20:58:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:11,996 INFO L225 Difference]: With dead ends: 474 [2023-12-15 20:58:11,996 INFO L226 Difference]: Without dead ends: 322 [2023-12-15 20:58:11,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2023-12-15 20:58:11,997 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 215 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:11,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 590 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:58:11,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-12-15 20:58:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 229. [2023-12-15 20:58:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 164 states have (on average 1.3475609756097562) internal successors, (221), 166 states have internal predecessors, (221), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:58:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 341 transitions. [2023-12-15 20:58:12,018 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 341 transitions. Word has length 142 [2023-12-15 20:58:12,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:12,018 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 341 transitions. [2023-12-15 20:58:12,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 341 transitions. [2023-12-15 20:58:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:58:12,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:12,019 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:12,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:12,224 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 [2023-12-15 20:58:12,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:12,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:12,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1914120205, now seen corresponding path program 1 times [2023-12-15 20:58:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376937685] [2023-12-15 20:58:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:12,250 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:12,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069912357] [2023-12-15 20:58:12,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:12,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:12,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:12,259 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) [2023-12-15 20:58:12,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:58:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:12,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 20:58:12,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:16,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:16,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:16,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376937685] [2023-12-15 20:58:16,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:16,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069912357] [2023-12-15 20:58:16,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069912357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:16,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:16,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:58:16,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387811812] [2023-12-15 20:58:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:16,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:58:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:58:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:58:16,491 INFO L87 Difference]: Start difference. First operand 229 states and 341 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:17,290 INFO L93 Difference]: Finished difference Result 516 states and 755 transitions. [2023-12-15 20:58:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:58:17,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:17,293 INFO L225 Difference]: With dead ends: 516 [2023-12-15 20:58:17,293 INFO L226 Difference]: Without dead ends: 300 [2023-12-15 20:58:17,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2023-12-15 20:58:17,294 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 269 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:17,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 524 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:58:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-15 20:58:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 236. [2023-12-15 20:58:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 171 states have (on average 1.3567251461988303) internal successors, (232), 173 states have internal predecessors, (232), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:58:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 352 transitions. [2023-12-15 20:58:17,318 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 352 transitions. Word has length 142 [2023-12-15 20:58:17,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:17,319 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 352 transitions. [2023-12-15 20:58:17,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 352 transitions. [2023-12-15 20:58:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:58:17,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:17,320 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:17,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:17,525 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 [2023-12-15 20:58:17,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:17,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -74218641, now seen corresponding path program 1 times [2023-12-15 20:58:17,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:17,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811167397] [2023-12-15 20:58:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:17,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:17,555 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:17,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859765295] [2023-12-15 20:58:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:17,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:17,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:17,558 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) [2023-12-15 20:58:17,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:58:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:17,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 20:58:17,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:22,673 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:22,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:22,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811167397] [2023-12-15 20:58:22,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859765295] [2023-12-15 20:58:22,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859765295] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:22,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:22,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:58:22,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726195556] [2023-12-15 20:58:22,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:22,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:58:22,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:22,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:58:22,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:58:22,675 INFO L87 Difference]: Start difference. First operand 236 states and 352 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:23,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:23,766 INFO L93 Difference]: Finished difference Result 523 states and 765 transitions. [2023-12-15 20:58:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:58:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:23,768 INFO L225 Difference]: With dead ends: 523 [2023-12-15 20:58:23,768 INFO L226 Difference]: Without dead ends: 300 [2023-12-15 20:58:23,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2023-12-15 20:58:23,769 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 232 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:23,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 619 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 20:58:23,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-12-15 20:58:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 238. [2023-12-15 20:58:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 173 states have (on average 1.3583815028901733) internal successors, (235), 175 states have internal predecessors, (235), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:58:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 355 transitions. [2023-12-15 20:58:23,792 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 355 transitions. Word has length 142 [2023-12-15 20:58:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:23,793 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 355 transitions. [2023-12-15 20:58:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 355 transitions. [2023-12-15 20:58:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:58:23,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:23,794 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:23,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:23,994 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 [2023-12-15 20:58:23,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:23,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash 514177399, now seen corresponding path program 1 times [2023-12-15 20:58:23,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:23,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070772133] [2023-12-15 20:58:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:23,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:24,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:24,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192271076] [2023-12-15 20:58:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:24,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:24,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:24,010 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) [2023-12-15 20:58:24,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:58:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:24,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:58:24,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:27,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:27,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:27,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070772133] [2023-12-15 20:58:27,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:27,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192271076] [2023-12-15 20:58:27,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192271076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:27,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:27,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:58:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356474643] [2023-12-15 20:58:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:58:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:58:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:58:27,205 INFO L87 Difference]: Start difference. First operand 238 states and 355 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:27,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:27,568 INFO L93 Difference]: Finished difference Result 556 states and 815 transitions. [2023-12-15 20:58:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 20:58:27,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:27,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:27,570 INFO L225 Difference]: With dead ends: 556 [2023-12-15 20:58:27,570 INFO L226 Difference]: Without dead ends: 331 [2023-12-15 20:58:27,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:58:27,571 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 156 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:27,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 709 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:58:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-15 20:58:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 258. [2023-12-15 20:58:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 193 states have (on average 1.3678756476683938) internal successors, (264), 195 states have internal predecessors, (264), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:58:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 384 transitions. [2023-12-15 20:58:27,585 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 384 transitions. Word has length 142 [2023-12-15 20:58:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:27,587 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 384 transitions. [2023-12-15 20:58:27,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:27,587 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 384 transitions. [2023-12-15 20:58:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:58:27,588 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:27,588 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:27,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:27,793 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 [2023-12-15 20:58:27,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:27,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:27,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1940888333, now seen corresponding path program 1 times [2023-12-15 20:58:27,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:27,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99851588] [2023-12-15 20:58:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:27,821 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:27,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556306593] [2023-12-15 20:58:27,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:27,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:27,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:27,823 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:58:27,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:58:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:27,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 20:58:27,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:31,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99851588] [2023-12-15 20:58:31,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556306593] [2023-12-15 20:58:31,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556306593] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:31,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:58:31,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977748109] [2023-12-15 20:58:31,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:31,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 20:58:31,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 20:58:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-15 20:58:31,529 INFO L87 Difference]: Start difference. First operand 258 states and 384 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:31,845 INFO L93 Difference]: Finished difference Result 576 states and 840 transitions. [2023-12-15 20:58:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-15 20:58:31,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:31,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:31,846 INFO L225 Difference]: With dead ends: 576 [2023-12-15 20:58:31,846 INFO L226 Difference]: Without dead ends: 331 [2023-12-15 20:58:31,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2023-12-15 20:58:31,847 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 196 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:31,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 507 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:58:31,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-15 20:58:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 253. [2023-12-15 20:58:31,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 188 states have (on average 1.3617021276595744) internal successors, (256), 190 states have internal predecessors, (256), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:58:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 376 transitions. [2023-12-15 20:58:31,859 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 376 transitions. Word has length 142 [2023-12-15 20:58:31,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:31,859 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 376 transitions. [2023-12-15 20:58:31,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 376 transitions. [2023-12-15 20:58:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:58:31,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:31,860 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:31,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:32,063 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 [2023-12-15 20:58:32,064 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:32,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:32,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1100983413, now seen corresponding path program 1 times [2023-12-15 20:58:32,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:32,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413760063] [2023-12-15 20:58:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:32,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:32,076 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:32,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353293325] [2023-12-15 20:58:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:32,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:32,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:32,077 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) [2023-12-15 20:58:32,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:58:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:32,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 20:58:32,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:34,472 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413760063] [2023-12-15 20:58:34,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353293325] [2023-12-15 20:58:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353293325] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:34,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:34,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-15 20:58:34,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364949946] [2023-12-15 20:58:34,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:34,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:58:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:58:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:58:34,474 INFO L87 Difference]: Start difference. First operand 253 states and 376 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:35,301 INFO L93 Difference]: Finished difference Result 564 states and 823 transitions. [2023-12-15 20:58:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:58:35,302 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:35,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:35,303 INFO L225 Difference]: With dead ends: 564 [2023-12-15 20:58:35,303 INFO L226 Difference]: Without dead ends: 324 [2023-12-15 20:58:35,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2023-12-15 20:58:35,306 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 212 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:35,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 628 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:58:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-15 20:58:35,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 248. [2023-12-15 20:58:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 183 states have (on average 1.360655737704918) internal successors, (249), 185 states have internal predecessors, (249), 60 states have call successors, (60), 4 states have call predecessors, (60), 4 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:58:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 369 transitions. [2023-12-15 20:58:35,319 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 369 transitions. Word has length 142 [2023-12-15 20:58:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:35,319 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 369 transitions. [2023-12-15 20:58:35,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 369 transitions. [2023-12-15 20:58:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-15 20:58:35,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:35,321 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:35,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:35,525 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 [2023-12-15 20:58:35,526 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:35,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1354082319, now seen corresponding path program 1 times [2023-12-15 20:58:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:35,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868497794] [2023-12-15 20:58:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:35,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:35,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789444739] [2023-12-15 20:58:35,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:35,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:35,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:35,551 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) [2023-12-15 20:58:35,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 20:58:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:35,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 20:58:35,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:38,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868497794] [2023-12-15 20:58:38,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789444739] [2023-12-15 20:58:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789444739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:38,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:38,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:58:38,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394205815] [2023-12-15 20:58:38,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:38,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:58:38,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:38,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:58:38,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:58:38,759 INFO L87 Difference]: Start difference. First operand 248 states and 369 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:39,312 INFO L93 Difference]: Finished difference Result 572 states and 833 transitions. [2023-12-15 20:58:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 20:58:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2023-12-15 20:58:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:39,314 INFO L225 Difference]: With dead ends: 572 [2023-12-15 20:58:39,314 INFO L226 Difference]: Without dead ends: 337 [2023-12-15 20:58:39,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-15 20:58:39,315 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 217 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:39,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 774 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:58:39,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-12-15 20:58:39,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2023-12-15 20:58:39,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 200 states have (on average 1.34) internal successors, (268), 203 states have internal predecessors, (268), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-15 20:58:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 400 transitions. [2023-12-15 20:58:39,328 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 400 transitions. Word has length 142 [2023-12-15 20:58:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:39,328 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 400 transitions. [2023-12-15 20:58:39,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:39,329 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 400 transitions. [2023-12-15 20:58:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 20:58:39,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:39,330 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:39,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:39,534 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 [2023-12-15 20:58:39,534 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:39,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1068640759, now seen corresponding path program 1 times [2023-12-15 20:58:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715737480] [2023-12-15 20:58:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:39,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:39,558 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3153449] [2023-12-15 20:58:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:39,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:39,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:39,563 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) [2023-12-15 20:58:39,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 20:58:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:39,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 20:58:39,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:39,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:39,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715737480] [2023-12-15 20:58:39,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3153449] [2023-12-15 20:58:39,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3153449] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:39,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:39,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 20:58:39,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925777756] [2023-12-15 20:58:39,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:58:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:58:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:58:39,664 INFO L87 Difference]: Start difference. First operand 272 states and 400 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:39,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:39,757 INFO L93 Difference]: Finished difference Result 768 states and 1143 transitions. [2023-12-15 20:58:39,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 20:58:39,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 20:58:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:39,760 INFO L225 Difference]: With dead ends: 768 [2023-12-15 20:58:39,760 INFO L226 Difference]: Without dead ends: 632 [2023-12-15 20:58:39,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:58:39,761 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 192 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:39,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 275 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:58:39,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-15 20:58:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 350. [2023-12-15 20:58:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 254 states have (on average 1.3267716535433072) internal successors, (337), 258 states have internal predecessors, (337), 88 states have call successors, (88), 7 states have call predecessors, (88), 7 states have return successors, (88), 84 states have call predecessors, (88), 88 states have call successors, (88) [2023-12-15 20:58:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 513 transitions. [2023-12-15 20:58:39,782 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 513 transitions. Word has length 143 [2023-12-15 20:58:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:39,782 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 513 transitions. [2023-12-15 20:58:39,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 513 transitions. [2023-12-15 20:58:39,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 20:58:39,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:39,783 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:39,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:39,988 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 [2023-12-15 20:58:39,988 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:39,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1451319175, now seen corresponding path program 1 times [2023-12-15 20:58:39,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216872341] [2023-12-15 20:58:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:39,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:40,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:40,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481374792] [2023-12-15 20:58:40,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:40,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:40,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:40,005 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) [2023-12-15 20:58:40,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 20:58:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:40,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:58:40,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:43,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:43,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216872341] [2023-12-15 20:58:43,617 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:43,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481374792] [2023-12-15 20:58:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481374792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:43,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:43,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:58:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446182863] [2023-12-15 20:58:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:58:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:58:43,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:58:43,618 INFO L87 Difference]: Start difference. First operand 350 states and 513 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:44,396 INFO L93 Difference]: Finished difference Result 603 states and 867 transitions. [2023-12-15 20:58:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:58:44,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 20:58:44,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:44,406 INFO L225 Difference]: With dead ends: 603 [2023-12-15 20:58:44,406 INFO L226 Difference]: Without dead ends: 449 [2023-12-15 20:58:44,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-12-15 20:58:44,407 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 305 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:44,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 451 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:58:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-15 20:58:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 293. [2023-12-15 20:58:44,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 234 states have (on average 1.3418803418803418) internal successors, (314), 236 states have internal predecessors, (314), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 20:58:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 418 transitions. [2023-12-15 20:58:44,423 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 418 transitions. Word has length 143 [2023-12-15 20:58:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:44,423 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 418 transitions. [2023-12-15 20:58:44,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 418 transitions. [2023-12-15 20:58:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 20:58:44,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:44,424 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:44,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-15 20:58:44,628 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 [2023-12-15 20:58:44,628 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:44,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:44,629 INFO L85 PathProgramCache]: Analyzing trace with hash 388582389, now seen corresponding path program 1 times [2023-12-15 20:58:44,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:44,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449536552] [2023-12-15 20:58:44,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:44,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:44,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:44,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1729258580] [2023-12-15 20:58:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:44,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:44,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:44,661 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) [2023-12-15 20:58:44,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-15 20:58:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:44,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 20:58:44,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:48,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:48,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449536552] [2023-12-15 20:58:48,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:48,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729258580] [2023-12-15 20:58:48,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729258580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:48,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:48,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 20:58:48,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131106641] [2023-12-15 20:58:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:48,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 20:58:48,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:48,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 20:58:48,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:58:48,297 INFO L87 Difference]: Start difference. First operand 293 states and 418 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:49,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:49,319 INFO L93 Difference]: Finished difference Result 569 states and 799 transitions. [2023-12-15 20:58:49,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 20:58:49,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 20:58:49,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:49,321 INFO L225 Difference]: With dead ends: 569 [2023-12-15 20:58:49,321 INFO L226 Difference]: Without dead ends: 400 [2023-12-15 20:58:49,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2023-12-15 20:58:49,322 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 228 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:49,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 635 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 20:58:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-12-15 20:58:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 302. [2023-12-15 20:58:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 243 states have (on average 1.3415637860082306) internal successors, (326), 245 states have internal predecessors, (326), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 20:58:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 430 transitions. [2023-12-15 20:58:49,336 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 430 transitions. Word has length 143 [2023-12-15 20:58:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:49,336 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 430 transitions. [2023-12-15 20:58:49,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 430 transitions. [2023-12-15 20:58:49,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 20:58:49,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:49,337 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:49,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-15 20:58:49,542 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 [2023-12-15 20:58:49,542 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:49,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1655446773, now seen corresponding path program 1 times [2023-12-15 20:58:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:49,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976774931] [2023-12-15 20:58:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:49,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739907068] [2023-12-15 20:58:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:49,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:49,555 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) [2023-12-15 20:58:49,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-15 20:58:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:49,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 20:58:49,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:52,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:52,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976774931] [2023-12-15 20:58:52,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:52,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739907068] [2023-12-15 20:58:52,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739907068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:52,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:52,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:58:52,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634542384] [2023-12-15 20:58:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:52,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:58:52,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:52,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:58:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:58:52,397 INFO L87 Difference]: Start difference. First operand 302 states and 430 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:53,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:53,205 INFO L93 Difference]: Finished difference Result 588 states and 825 transitions. [2023-12-15 20:58:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 20:58:53,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 20:58:53,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:53,207 INFO L225 Difference]: With dead ends: 588 [2023-12-15 20:58:53,207 INFO L226 Difference]: Without dead ends: 410 [2023-12-15 20:58:53,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2023-12-15 20:58:53,208 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 228 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:53,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 471 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:58:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2023-12-15 20:58:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 306. [2023-12-15 20:58:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 247 states have (on average 1.3400809716599191) internal successors, (331), 249 states have internal predecessors, (331), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 20:58:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 435 transitions. [2023-12-15 20:58:53,222 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 435 transitions. Word has length 143 [2023-12-15 20:58:53,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:53,222 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 435 transitions. [2023-12-15 20:58:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 435 transitions. [2023-12-15 20:58:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 20:58:53,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:53,224 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:53,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-15 20:58:53,427 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 [2023-12-15 20:58:53,428 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:53,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 975388403, now seen corresponding path program 1 times [2023-12-15 20:58:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:53,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927586028] [2023-12-15 20:58:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:53,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057767202] [2023-12-15 20:58:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:53,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:53,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:53,442 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) [2023-12-15 20:58:53,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-15 20:58:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:53,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 20:58:53,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:58:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:58:57,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:58:57,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:58:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927586028] [2023-12-15 20:58:57,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:58:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057767202] [2023-12-15 20:58:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057767202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:58:57,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:58:57,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:58:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439352867] [2023-12-15 20:58:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:58:57,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:58:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:58:57,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:58:57,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:58:57,812 INFO L87 Difference]: Start difference. First operand 306 states and 435 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:58,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:58:58,716 INFO L93 Difference]: Finished difference Result 596 states and 834 transitions. [2023-12-15 20:58:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 20:58:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 20:58:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:58:58,725 INFO L225 Difference]: With dead ends: 596 [2023-12-15 20:58:58,725 INFO L226 Difference]: Without dead ends: 414 [2023-12-15 20:58:58,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2023-12-15 20:58:58,726 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 198 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 20:58:58,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 524 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 20:58:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-12-15 20:58:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 306. [2023-12-15 20:58:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 247 states have (on average 1.3400809716599191) internal successors, (331), 249 states have internal predecessors, (331), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 20:58:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 435 transitions. [2023-12-15 20:58:58,746 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 435 transitions. Word has length 143 [2023-12-15 20:58:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:58:58,746 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 435 transitions. [2023-12-15 20:58:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:58:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 435 transitions. [2023-12-15 20:58:58,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 20:58:58,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:58:58,747 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:58:58,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-15 20:58:58,952 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 [2023-12-15 20:58:58,952 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:58:58,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:58:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1563784443, now seen corresponding path program 1 times [2023-12-15 20:58:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:58:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851403215] [2023-12-15 20:58:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:58:58,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:58:58,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273747398] [2023-12-15 20:58:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:58:58,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:58:58,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:58:58,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:58:58,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-15 20:58:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:58:59,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:58:59,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:59:01,325 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-12-15 20:59:01,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:59:01,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:59:01,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851403215] [2023-12-15 20:59:01,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:59:01,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273747398] [2023-12-15 20:59:01,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273747398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:59:01,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:59:01,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 20:59:01,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089493834] [2023-12-15 20:59:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:59:01,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:59:01,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:59:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:59:01,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:59:01,327 INFO L87 Difference]: Start difference. First operand 306 states and 435 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:59:01,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:59:01,777 INFO L93 Difference]: Finished difference Result 575 states and 806 transitions. [2023-12-15 20:59:01,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-15 20:59:01,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2023-12-15 20:59:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:59:01,780 INFO L225 Difference]: With dead ends: 575 [2023-12-15 20:59:01,780 INFO L226 Difference]: Without dead ends: 393 [2023-12-15 20:59:01,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-12-15 20:59:01,782 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 211 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 20:59:01,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 592 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 20:59:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-15 20:59:01,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 301. [2023-12-15 20:59:01,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 242 states have (on average 1.3388429752066116) internal successors, (324), 244 states have internal predecessors, (324), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-15 20:59:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 428 transitions. [2023-12-15 20:59:01,798 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 428 transitions. Word has length 143 [2023-12-15 20:59:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:59:01,798 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 428 transitions. [2023-12-15 20:59:01,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-12-15 20:59:01,798 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 428 transitions. [2023-12-15 20:59:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-15 20:59:01,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:59:01,799 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:59:01,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-15 20:59:02,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 20:59:02,004 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:59:02,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:59:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash -891281289, now seen corresponding path program 1 times [2023-12-15 20:59:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:59:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277986144] [2023-12-15 20:59:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:59:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:59:02,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:59:02,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179210429] [2023-12-15 20:59:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:59:02,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:59:02,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:59:02,018 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:59:02,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-15 20:59:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:59:02,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 20:59:02,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-15 20:59:04,131 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:59:04,134 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:59:04,134 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 [2023-12-15 20:59:04,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-15 20:59:04,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-15 20:59:04,337 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 144 with TraceHistMax 22,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-19-5-2-4-4-3-3-3-3-3-3-2-2-1 context. [2023-12-15 20:59:04,341 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:59:04,342 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:59:04,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:59:04 BoogieIcfgContainer [2023-12-15 20:59:04,344 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:59:04,344 INFO L158 Benchmark]: Toolchain (without parser) took 70167.10ms. Allocated memory was 324.0MB in the beginning and 989.9MB in the end (delta: 665.8MB). Free memory was 275.1MB in the beginning and 529.8MB in the end (delta: -254.6MB). Peak memory consumption was 586.8MB. Max. memory is 8.0GB. [2023-12-15 20:59:04,344 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 212.9MB. Free memory is still 165.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:59:04,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.42ms. Allocated memory is still 324.0MB. Free memory was 275.1MB in the beginning and 259.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:59:04,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.00ms. Allocated memory is still 324.0MB. Free memory was 259.3MB in the beginning and 253.6MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 20:59:04,345 INFO L158 Benchmark]: Boogie Preprocessor took 70.41ms. Allocated memory is still 324.0MB. Free memory was 253.6MB in the beginning and 242.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 20:59:04,345 INFO L158 Benchmark]: RCFGBuilder took 448.33ms. Allocated memory is still 324.0MB. Free memory was 242.1MB in the beginning and 286.7MB in the end (delta: -44.6MB). Peak memory consumption was 28.7MB. Max. memory is 8.0GB. [2023-12-15 20:59:04,345 INFO L158 Benchmark]: TraceAbstraction took 69347.88ms. Allocated memory was 324.0MB in the beginning and 989.9MB in the end (delta: 665.8MB). Free memory was 286.2MB in the beginning and 529.8MB in the end (delta: -243.6MB). Peak memory consumption was 596.9MB. Max. memory is 8.0GB. [2023-12-15 20:59:04,346 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 212.9MB. Free memory is still 165.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.42ms. Allocated memory is still 324.0MB. Free memory was 275.1MB in the beginning and 259.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.00ms. Allocated memory is still 324.0MB. Free memory was 259.3MB in the beginning and 253.6MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 70.41ms. Allocated memory is still 324.0MB. Free memory was 253.6MB in the beginning and 242.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * RCFGBuilder took 448.33ms. Allocated memory is still 324.0MB. Free memory was 242.1MB in the beginning and 286.7MB in the end (delta: -44.6MB). Peak memory consumption was 28.7MB. Max. memory is 8.0GB. * TraceAbstraction took 69347.88ms. Allocated memory was 324.0MB in the beginning and 989.9MB in the end (delta: 665.8MB). Free memory was 286.2MB in the beginning and 529.8MB in the end (delta: -243.6MB). Peak memory consumption was 596.9MB. 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 analyzing trace of length 144 with TraceHistMax 22,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-19-5-2-4-4-3-3-3-3-3-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 69.3s, OverallIterations: 17, TraceHistogramMax: 22, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3585 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3585 mSDsluCounter, 8281 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6353 mSDsCounter, 529 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4784 IncrementalHoareTripleChecker+Invalid, 5313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 529 mSolverCounterUnsat, 1928 mSDtfsCounter, 4784 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2402 GetRequests, 2140 SyntacticMatches, 0 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=350occurred in iteration=11, InterpolantAutomatonStates: 266, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 1526 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 50.7s InterpolantComputationTime, 2420 NumberOfCodeBlocks, 2420 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2262 ConstructedInterpolants, 0 QuantifiedInterpolants, 20695 SizeOfPredicates, 269 NumberOfNonLiveVariables, 5430 ConjunctsInSsa, 278 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 14784/14784 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