/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum60.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 07:32:28,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 07:32:28,575 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 07:32:28,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 07:32:28,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 07:32:28,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 07:32:28,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 07:32:28,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 07:32:28,604 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 07:32:28,607 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 07:32:28,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 07:32:28,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 07:32:28,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 07:32:28,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 07:32:28,609 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 07:32:28,609 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 07:32:28,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 07:32:28,609 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 07:32:28,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 07:32:28,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 07:32:28,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 07:32:28,611 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 07:32:28,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 07:32:28,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 07:32:28,611 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 07:32:28,611 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 07:32:28,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 07:32:28,611 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 07:32:28,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 07:32:28,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 07:32:28,613 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 07:32:28,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 07:32:28,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 07:32:28,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 07:32:28,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 07:32:28,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 07:32:28,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 07:32:28,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 07:32:28,614 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 07:32:28,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 07:32:28,614 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 07:32:28,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 07:32:28,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 07:32:28,614 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 07:32:28,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 07:32:28,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 07:32:28,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 07:32:28,828 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 07:32:28,831 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 07:32:28,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum60.i [2023-12-20 07:32:29,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 07:32:30,046 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 07:32:30,047 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum60.i [2023-12-20 07:32:30,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a5fba6c/6f5142c3cdb8468dafd9baa283fb7728/FLAGaf5608771 [2023-12-20 07:32:30,069 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00a5fba6c/6f5142c3cdb8468dafd9baa283fb7728 [2023-12-20 07:32:30,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 07:32:30,072 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 07:32:30,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 07:32:30,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 07:32:30,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 07:32:30,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32359e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30, skipping insertion in model container [2023-12-20 07:32:30,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,096 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 07:32:30,233 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum60.i[1465,1478] [2023-12-20 07:32:30,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 07:32:30,241 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 07:32:30,255 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum60.i[1465,1478] [2023-12-20 07:32:30,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 07:32:30,265 INFO L206 MainTranslator]: Completed translation [2023-12-20 07:32:30,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30 WrapperNode [2023-12-20 07:32:30,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 07:32:30,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 07:32:30,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 07:32:30,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 07:32:30,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,291 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-12-20 07:32:30,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 07:32:30,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 07:32:30,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 07:32:30,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 07:32:30,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,301 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,334 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-12-20 07:32:30,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 07:32:30,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 07:32:30,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 07:32:30,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 07:32:30,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (1/1) ... [2023-12-20 07:32:30,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 07:32:30,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:30,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 07:32:30,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 07:32:30,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 07:32:30,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 07:32:30,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 07:32:30,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 07:32:30,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 07:32:30,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 07:32:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 07:32:30,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 07:32:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 07:32:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 07:32:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2023-12-20 07:32:30,440 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2023-12-20 07:32:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 07:32:30,500 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 07:32:30,502 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 07:32:30,618 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 07:32:30,638 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 07:32:30,638 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-20 07:32:30,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:32:30 BoogieIcfgContainer [2023-12-20 07:32:30,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 07:32:30,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 07:32:30,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 07:32:30,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 07:32:30,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 07:32:30" (1/3) ... [2023-12-20 07:32:30,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1c45e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:32:30, skipping insertion in model container [2023-12-20 07:32:30,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 07:32:30" (2/3) ... [2023-12-20 07:32:30,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1c45e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 07:32:30, skipping insertion in model container [2023-12-20 07:32:30,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 07:32:30" (3/3) ... [2023-12-20 07:32:30,644 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum60.i [2023-12-20 07:32:30,656 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 07:32:30,656 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 07:32:30,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 07:32:30,690 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;@1a720fb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 07:32:30,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 07:32:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:30,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 07:32:30,698 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:30,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:30,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:30,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:30,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1502132506, now seen corresponding path program 1 times [2023-12-20 07:32:30,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:30,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448465838] [2023-12-20 07:32:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:30,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:30,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:30,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448465838] [2023-12-20 07:32:30,813 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 07:32:30,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42599800] [2023-12-20 07:32:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:30,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:30,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:30,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:30,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 07:32:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:30,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 07:32:30,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 07:32:30,943 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:32:30,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42599800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:32:30,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:32:30,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 07:32:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706113908] [2023-12-20 07:32:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:32:30,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 07:32:30,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 07:32:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 07:32:30,968 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:30,991 INFO L93 Difference]: Finished difference Result 44 states and 65 transitions. [2023-12-20 07:32:30,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 07:32:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-12-20 07:32:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:30,998 INFO L225 Difference]: With dead ends: 44 [2023-12-20 07:32:30,998 INFO L226 Difference]: Without dead ends: 21 [2023-12-20 07:32:31,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 07:32:31,003 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:31,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:31,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-20 07:32:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-20 07:32:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-20 07:32:31,028 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 28 [2023-12-20 07:32:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:31,028 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-20 07:32:31,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-20 07:32:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 07:32:31,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:31,030 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:31,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 07:32:31,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 07:32:31,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:31,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1260265879, now seen corresponding path program 1 times [2023-12-20 07:32:31,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:31,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493625332] [2023-12-20 07:32:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:31,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:31,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493625332] [2023-12-20 07:32:31,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 07:32:31,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546038516] [2023-12-20 07:32:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:31,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:31,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:31,267 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:31,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 07:32:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:31,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 07:32:31,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-20 07:32:31,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:32:31,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546038516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:32:31,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:32:31,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 07:32:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232958824] [2023-12-20 07:32:31,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:32:31,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 07:32:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:31,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 07:32:31,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:31,347 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:31,357 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-12-20 07:32:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 07:32:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-12-20 07:32:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:31,358 INFO L225 Difference]: With dead ends: 41 [2023-12-20 07:32:31,358 INFO L226 Difference]: Without dead ends: 22 [2023-12-20 07:32:31,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:31,360 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:31,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-20 07:32:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-20 07:32:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-20 07:32:31,364 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 28 [2023-12-20 07:32:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:31,364 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-20 07:32:31,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-20 07:32:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 07:32:31,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:31,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:31,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 07:32:31,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:31,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash -432814053, now seen corresponding path program 1 times [2023-12-20 07:32:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139772465] [2023-12-20 07:32:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139772465] [2023-12-20 07:32:31,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 07:32:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608888223] [2023-12-20 07:32:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:31,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:31,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:31,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:31,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 07:32:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:31,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 07:32:31,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 07:32:31,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:32:31,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608888223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:32:31,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:32:31,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 07:32:31,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950512117] [2023-12-20 07:32:31,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:32:31,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 07:32:31,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:31,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 07:32:31,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:31,712 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:31,728 INFO L93 Difference]: Finished difference Result 42 states and 57 transitions. [2023-12-20 07:32:31,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 07:32:31,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-20 07:32:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:31,729 INFO L225 Difference]: With dead ends: 42 [2023-12-20 07:32:31,729 INFO L226 Difference]: Without dead ends: 25 [2023-12-20 07:32:31,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:31,730 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:31,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-20 07:32:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-12-20 07:32:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-12-20 07:32:31,734 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2023-12-20 07:32:31,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:31,734 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-12-20 07:32:31,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-12-20 07:32:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-20 07:32:31,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:31,735 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:31,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 07:32:31,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:31,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:31,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:31,941 INFO L85 PathProgramCache]: Analyzing trace with hash 28977858, now seen corresponding path program 1 times [2023-12-20 07:32:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736949755] [2023-12-20 07:32:31,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:31,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736949755] [2023-12-20 07:32:31,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 07:32:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873143518] [2023-12-20 07:32:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:31,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:31,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:32,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 07:32:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 07:32:32,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 07:32:32,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:32:32,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873143518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:32:32,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:32:32,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 07:32:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277941742] [2023-12-20 07:32:32,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:32:32,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 07:32:32,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:32,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 07:32:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:32,111 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:32,126 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-12-20 07:32:32,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 07:32:32,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-12-20 07:32:32,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:32,129 INFO L225 Difference]: With dead ends: 40 [2023-12-20 07:32:32,129 INFO L226 Difference]: Without dead ends: 25 [2023-12-20 07:32:32,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:32,130 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:32,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-20 07:32:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-20 07:32:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-12-20 07:32:32,134 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 38 [2023-12-20 07:32:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:32,135 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-12-20 07:32:32,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-12-20 07:32:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 07:32:32,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:32,136 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:32,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:32,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:32,339 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:32,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:32,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2098863663, now seen corresponding path program 1 times [2023-12-20 07:32:32,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:32,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267678137] [2023-12-20 07:32:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:32,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:32,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267678137] [2023-12-20 07:32:32,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 07:32:32,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107028495] [2023-12-20 07:32:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:32,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:32,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 07:32:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 07:32:32,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 07:32:32,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:32:32,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107028495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:32:32,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 07:32:32,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 07:32:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528382656] [2023-12-20 07:32:32,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:32:32,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 07:32:32,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:32,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 07:32:32,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:32,435 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:32,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:32,463 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2023-12-20 07:32:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 07:32:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-12-20 07:32:32,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:32,465 INFO L225 Difference]: With dead ends: 51 [2023-12-20 07:32:32,465 INFO L226 Difference]: Without dead ends: 31 [2023-12-20 07:32:32,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 07:32:32,466 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:32,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-20 07:32:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2023-12-20 07:32:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2023-12-20 07:32:32,470 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 39 [2023-12-20 07:32:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:32,470 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2023-12-20 07:32:32,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 07:32:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2023-12-20 07:32:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-20 07:32:32,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:32,471 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:32,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 07:32:32,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:32,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:32,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1976122640, now seen corresponding path program 1 times [2023-12-20 07:32:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:32,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346108598] [2023-12-20 07:32:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:32,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-20 07:32:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 07:32:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 07:32:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 07:32:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:32,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346108598] [2023-12-20 07:32:32,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346108598] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 07:32:32,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965852326] [2023-12-20 07:32:32,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:32,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:32,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:32,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:32,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 07:32:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:32,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 07:32:32,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 07:32:32,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 07:32:32,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965852326] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:32,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 07:32:32,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-12-20 07:32:32,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814039104] [2023-12-20 07:32:32,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:32,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 07:32:32,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:32,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 07:32:32,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 07:32:32,912 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:32,924 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2023-12-20 07:32:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 07:32:32,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2023-12-20 07:32:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:32,925 INFO L225 Difference]: With dead ends: 58 [2023-12-20 07:32:32,925 INFO L226 Difference]: Without dead ends: 32 [2023-12-20 07:32:32,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 07:32:32,926 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:32,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-20 07:32:32,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-20 07:32:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-12-20 07:32:32,930 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 39 [2023-12-20 07:32:32,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:32,930 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-12-20 07:32:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-12-20 07:32:32,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-20 07:32:32,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:32,931 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:32,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:33,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:33,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:33,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash -71399842, now seen corresponding path program 2 times [2023-12-20 07:32:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:33,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040415998] [2023-12-20 07:32:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 07:32:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-20 07:32:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-12-20 07:32:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-20 07:32:33,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:33,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040415998] [2023-12-20 07:32:33,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040415998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 07:32:33,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553359957] [2023-12-20 07:32:33,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 07:32:33,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:33,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:33,258 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:33,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 07:32:33,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 07:32:33,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:33,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 07:32:33,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 07:32:33,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 07:32:33,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553359957] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:33,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 07:32:33,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2023-12-20 07:32:33,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204779049] [2023-12-20 07:32:33,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:33,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 07:32:33,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:33,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 07:32:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 07:32:33,455 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 07:32:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:33,502 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2023-12-20 07:32:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 07:32:33,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2023-12-20 07:32:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:33,506 INFO L225 Difference]: With dead ends: 68 [2023-12-20 07:32:33,506 INFO L226 Difference]: Without dead ends: 42 [2023-12-20 07:32:33,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 07:32:33,508 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:33,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-20 07:32:33,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-20 07:32:33,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2023-12-20 07:32:33,523 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2023-12-20 07:32:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:33,523 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2023-12-20 07:32:33,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 07:32:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2023-12-20 07:32:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 07:32:33,532 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:33,532 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:33,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-20 07:32:33,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:33,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:33,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1756456273, now seen corresponding path program 3 times [2023-12-20 07:32:33,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:33,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443668633] [2023-12-20 07:32:33,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:33,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 07:32:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-20 07:32:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 07:32:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-20 07:32:33,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443668633] [2023-12-20 07:32:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443668633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 07:32:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594936710] [2023-12-20 07:32:33,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 07:32:33,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:33,825 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:33,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 07:32:33,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 07:32:33,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:33,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 07:32:33,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-12-20 07:32:33,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 07:32:33,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594936710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 07:32:33,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 07:32:33,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-12-20 07:32:33,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644583332] [2023-12-20 07:32:33,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 07:32:33,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 07:32:33,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 07:32:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 07:32:33,901 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:33,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:33,916 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2023-12-20 07:32:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 07:32:33,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2023-12-20 07:32:33,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:33,917 INFO L225 Difference]: With dead ends: 71 [2023-12-20 07:32:33,918 INFO L226 Difference]: Without dead ends: 44 [2023-12-20 07:32:33,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 07:32:33,918 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:33,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-20 07:32:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2023-12-20 07:32:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2023-12-20 07:32:33,922 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 57 [2023-12-20 07:32:33,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:33,922 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2023-12-20 07:32:33,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:33,922 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2023-12-20 07:32:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 07:32:33,923 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:33,923 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:33,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:34,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 07:32:34,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:34,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash 882234655, now seen corresponding path program 1 times [2023-12-20 07:32:34,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:34,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724845391] [2023-12-20 07:32:34,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:34,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:34,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:34,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352556255] [2023-12-20 07:32:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:34,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:34,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:34,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 07:32:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:34,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 07:32:34,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-20 07:32:34,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-20 07:32:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:34,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724845391] [2023-12-20 07:32:34,521 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:34,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352556255] [2023-12-20 07:32:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352556255] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:34,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:34,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2023-12-20 07:32:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393210683] [2023-12-20 07:32:34,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 07:32:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 07:32:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-12-20 07:32:34,523 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:34,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:34,556 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2023-12-20 07:32:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 07:32:34,557 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2023-12-20 07:32:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:34,557 INFO L225 Difference]: With dead ends: 78 [2023-12-20 07:32:34,557 INFO L226 Difference]: Without dead ends: 51 [2023-12-20 07:32:34,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-12-20 07:32:34,558 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:34,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-20 07:32:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-20 07:32:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2023-12-20 07:32:34,563 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 66 [2023-12-20 07:32:34,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:34,563 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2023-12-20 07:32:34,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:34,563 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2023-12-20 07:32:34,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 07:32:34,564 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:34,564 INFO L195 NwaCegarLoop]: trace histogram [22, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:34,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 07:32:34,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:34,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:34,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash -2034988385, now seen corresponding path program 2 times [2023-12-20 07:32:34,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:34,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282634034] [2023-12-20 07:32:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:34,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:34,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:34,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371184425] [2023-12-20 07:32:34,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 07:32:34,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:34,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:34,796 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:34,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 07:32:34,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 07:32:34,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:34,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 07:32:34,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-20 07:32:35,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-20 07:32:35,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282634034] [2023-12-20 07:32:35,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:35,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371184425] [2023-12-20 07:32:35,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371184425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:35,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:35,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 48 [2023-12-20 07:32:35,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144494690] [2023-12-20 07:32:35,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:35,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-20 07:32:35,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-20 07:32:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 07:32:35,691 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:35,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:35,741 INFO L93 Difference]: Finished difference Result 102 states and 137 transitions. [2023-12-20 07:32:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 07:32:35,741 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2023-12-20 07:32:35,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:35,742 INFO L225 Difference]: With dead ends: 102 [2023-12-20 07:32:35,742 INFO L226 Difference]: Without dead ends: 75 [2023-12-20 07:32:35,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 07:32:35,743 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:35,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-20 07:32:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-12-20 07:32:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2023-12-20 07:32:35,748 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 78 [2023-12-20 07:32:35,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:35,748 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2023-12-20 07:32:35,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2023-12-20 07:32:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 07:32:35,749 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:35,749 INFO L195 NwaCegarLoop]: trace histogram [46, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:35,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:35,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 07:32:35,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:35,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash 396703135, now seen corresponding path program 3 times [2023-12-20 07:32:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:35,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843231164] [2023-12-20 07:32:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:35,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:35,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193997111] [2023-12-20 07:32:35,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 07:32:35,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:35,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:36,004 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:36,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 07:32:36,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 07:32:36,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:36,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 07:32:36,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 76 proven. 1 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2023-12-20 07:32:36,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2023-12-20 07:32:36,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:36,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843231164] [2023-12-20 07:32:36,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:36,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193997111] [2023-12-20 07:32:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193997111] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:36,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:36,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-20 07:32:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104146252] [2023-12-20 07:32:36,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:36,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 07:32:36,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 07:32:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 07:32:36,136 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:32:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:36,149 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2023-12-20 07:32:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 07:32:36,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 102 [2023-12-20 07:32:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:36,150 INFO L225 Difference]: With dead ends: 98 [2023-12-20 07:32:36,150 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 07:32:36,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 07:32:36,150 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:36,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 07:32:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-20 07:32:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2023-12-20 07:32:36,155 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 102 [2023-12-20 07:32:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:36,155 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2023-12-20 07:32:36,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:32:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2023-12-20 07:32:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 07:32:36,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:36,156 INFO L195 NwaCegarLoop]: trace histogram [46, 9, 9, 6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:36,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:36,362 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 [2023-12-20 07:32:36,362 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:36,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:36,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1479846834, now seen corresponding path program 4 times [2023-12-20 07:32:36,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:36,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483576984] [2023-12-20 07:32:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:36,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:36,395 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840672304] [2023-12-20 07:32:36,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 07:32:36,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:36,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:36,397 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) [2023-12-20 07:32:36,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 07:32:36,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 07:32:36,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:36,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 07:32:36,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2023-12-20 07:32:36,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1241 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2023-12-20 07:32:36,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:36,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483576984] [2023-12-20 07:32:36,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:36,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840672304] [2023-12-20 07:32:36,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840672304] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:36,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:36,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-20 07:32:36,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503393057] [2023-12-20 07:32:36,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:36,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 07:32:36,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 07:32:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-20 07:32:36,627 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:36,657 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2023-12-20 07:32:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 07:32:36,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 105 [2023-12-20 07:32:36,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:36,658 INFO L225 Difference]: With dead ends: 118 [2023-12-20 07:32:36,658 INFO L226 Difference]: Without dead ends: 90 [2023-12-20 07:32:36,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-20 07:32:36,659 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:36,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-12-20 07:32:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-12-20 07:32:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2023-12-20 07:32:36,663 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 105 [2023-12-20 07:32:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:36,663 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2023-12-20 07:32:36,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2023-12-20 07:32:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 07:32:36,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:36,664 INFO L195 NwaCegarLoop]: trace histogram [46, 21, 21, 18, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:36,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:36,870 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 [2023-12-20 07:32:36,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:36,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash -735799666, now seen corresponding path program 5 times [2023-12-20 07:32:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915276910] [2023-12-20 07:32:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:36,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:36,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300287059] [2023-12-20 07:32:36,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 07:32:36,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:36,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:36,903 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) [2023-12-20 07:32:36,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 07:32:37,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2023-12-20 07:32:37,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:37,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 07:32:37,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 354 proven. 2 refuted. 0 times theorem prover too weak. 1443 trivial. 0 not checked. [2023-12-20 07:32:37,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 1689 trivial. 0 not checked. [2023-12-20 07:32:37,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:37,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915276910] [2023-12-20 07:32:37,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:37,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300287059] [2023-12-20 07:32:37,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300287059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:37,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:37,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-20 07:32:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149344470] [2023-12-20 07:32:37,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 07:32:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 07:32:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-20 07:32:37,390 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:32:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:37,415 INFO L93 Difference]: Finished difference Result 142 states and 163 transitions. [2023-12-20 07:32:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 07:32:37,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 141 [2023-12-20 07:32:37,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:37,416 INFO L225 Difference]: With dead ends: 142 [2023-12-20 07:32:37,416 INFO L226 Difference]: Without dead ends: 102 [2023-12-20 07:32:37,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-20 07:32:37,417 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:37,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 74 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:37,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-20 07:32:37,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-20 07:32:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.092783505154639) internal successors, (106), 97 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2023-12-20 07:32:37,421 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 141 [2023-12-20 07:32:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:37,421 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2023-12-20 07:32:37,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:32:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2023-12-20 07:32:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 07:32:37,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:37,423 INFO L195 NwaCegarLoop]: trace histogram [46, 33, 33, 18, 15, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:37,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:37,629 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 [2023-12-20 07:32:37,630 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:37,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 815828302, now seen corresponding path program 6 times [2023-12-20 07:32:37,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:37,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35581081] [2023-12-20 07:32:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:37,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:37,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:37,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789482585] [2023-12-20 07:32:37,667 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 07:32:37,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:37,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:37,668 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) [2023-12-20 07:32:37,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 07:32:38,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-20 07:32:38,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:38,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 07:32:38,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2789 backedges. 780 proven. 10 refuted. 0 times theorem prover too weak. 1999 trivial. 0 not checked. [2023-12-20 07:32:38,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2789 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2779 trivial. 0 not checked. [2023-12-20 07:32:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35581081] [2023-12-20 07:32:38,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789482585] [2023-12-20 07:32:38,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789482585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:38,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:38,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-20 07:32:38,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372085141] [2023-12-20 07:32:38,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:38,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 07:32:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 07:32:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-12-20 07:32:38,086 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:32:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:38,106 INFO L93 Difference]: Finished difference Result 152 states and 174 transitions. [2023-12-20 07:32:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 07:32:38,107 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 177 [2023-12-20 07:32:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:38,107 INFO L225 Difference]: With dead ends: 152 [2023-12-20 07:32:38,107 INFO L226 Difference]: Without dead ends: 108 [2023-12-20 07:32:38,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-12-20 07:32:38,108 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:38,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:38,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-20 07:32:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-20 07:32:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.087378640776699) internal successors, (112), 103 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:38,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2023-12-20 07:32:38,112 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 177 [2023-12-20 07:32:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:38,112 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2023-12-20 07:32:38,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:32:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2023-12-20 07:32:38,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-20 07:32:38,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:38,113 INFO L195 NwaCegarLoop]: trace histogram [46, 33, 33, 18, 15, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:38,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:38,319 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 [2023-12-20 07:32:38,320 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:38,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:38,320 INFO L85 PathProgramCache]: Analyzing trace with hash 421936046, now seen corresponding path program 7 times [2023-12-20 07:32:38,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:38,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369302219] [2023-12-20 07:32:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:38,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:38,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:38,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560699717] [2023-12-20 07:32:38,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 07:32:38,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:38,368 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) [2023-12-20 07:32:38,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 07:32:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:32:38,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-20 07:32:38,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2834 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2023-12-20 07:32:39,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2834 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2023-12-20 07:32:40,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:40,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369302219] [2023-12-20 07:32:40,556 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:40,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560699717] [2023-12-20 07:32:40,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560699717] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:40,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:40,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 49] total 62 [2023-12-20 07:32:40,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179988721] [2023-12-20 07:32:40,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:40,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 07:32:40,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:40,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 07:32:40,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 07:32:40,559 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 62 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:40,609 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2023-12-20 07:32:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 07:32:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 183 [2023-12-20 07:32:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:40,611 INFO L225 Difference]: With dead ends: 182 [2023-12-20 07:32:40,611 INFO L226 Difference]: Without dead ends: 122 [2023-12-20 07:32:40,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 270 SyntacticMatches, 34 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 07:32:40,612 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:40,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:40,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-20 07:32:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2023-12-20 07:32:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.0769230769230769) internal successors, (126), 117 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2023-12-20 07:32:40,616 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 183 [2023-12-20 07:32:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:40,617 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2023-12-20 07:32:40,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 07:32:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2023-12-20 07:32:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-20 07:32:40,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:40,618 INFO L195 NwaCegarLoop]: trace histogram [60, 33, 33, 18, 15, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:40,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:40,825 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 [2023-12-20 07:32:40,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:40,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash 512505838, now seen corresponding path program 8 times [2023-12-20 07:32:40,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:40,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441522569] [2023-12-20 07:32:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:40,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:40,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:40,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014769190] [2023-12-20 07:32:40,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 07:32:40,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:40,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:40,886 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) [2023-12-20 07:32:40,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 07:32:41,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 07:32:41,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:41,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 07:32:41,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3583 backedges. 549 proven. 57 refuted. 0 times theorem prover too weak. 2977 trivial. 0 not checked. [2023-12-20 07:32:41,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3583 backedges. 93 proven. 835 refuted. 0 times theorem prover too weak. 2655 trivial. 0 not checked. [2023-12-20 07:32:41,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:41,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441522569] [2023-12-20 07:32:41,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:41,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014769190] [2023-12-20 07:32:41,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014769190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:41,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:41,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-20 07:32:41,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591625824] [2023-12-20 07:32:41,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:41,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 07:32:41,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:41,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 07:32:41,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-12-20 07:32:41,282 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:32:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:41,330 INFO L93 Difference]: Finished difference Result 204 states and 233 transitions. [2023-12-20 07:32:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 07:32:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 197 [2023-12-20 07:32:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:41,331 INFO L225 Difference]: With dead ends: 204 [2023-12-20 07:32:41,331 INFO L226 Difference]: Without dead ends: 146 [2023-12-20 07:32:41,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-12-20 07:32:41,332 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:41,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:41,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-12-20 07:32:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-12-20 07:32:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.0638297872340425) internal successors, (150), 141 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 156 transitions. [2023-12-20 07:32:41,336 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 156 transitions. Word has length 197 [2023-12-20 07:32:41,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:41,336 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 156 transitions. [2023-12-20 07:32:41,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:32:41,336 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 156 transitions. [2023-12-20 07:32:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-20 07:32:41,338 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:41,338 INFO L195 NwaCegarLoop]: trace histogram [60, 57, 57, 42, 15, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:41,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:41,545 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 [2023-12-20 07:32:41,545 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:41,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1337883758, now seen corresponding path program 9 times [2023-12-20 07:32:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:41,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253867401] [2023-12-20 07:32:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:41,597 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933778984] [2023-12-20 07:32:41,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 07:32:41,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:41,614 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) [2023-12-20 07:32:41,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 07:32:42,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-12-20 07:32:42,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:42,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 07:32:42,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6859 backedges. 2252 proven. 55 refuted. 0 times theorem prover too weak. 4552 trivial. 0 not checked. [2023-12-20 07:32:42,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6859 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6804 trivial. 0 not checked. [2023-12-20 07:32:42,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253867401] [2023-12-20 07:32:42,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:42,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933778984] [2023-12-20 07:32:42,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933778984] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:42,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:42,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-20 07:32:42,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137128433] [2023-12-20 07:32:42,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-20 07:32:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-20 07:32:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-12-20 07:32:42,821 INFO L87 Difference]: Start difference. First operand 146 states and 156 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:32:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:42,844 INFO L93 Difference]: Finished difference Result 226 states and 254 transitions. [2023-12-20 07:32:42,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 07:32:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 269 [2023-12-20 07:32:42,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:42,845 INFO L225 Difference]: With dead ends: 226 [2023-12-20 07:32:42,845 INFO L226 Difference]: Without dead ends: 158 [2023-12-20 07:32:42,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-12-20 07:32:42,846 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:42,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:32:42,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-20 07:32:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2023-12-20 07:32:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.0588235294117647) internal successors, (162), 153 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2023-12-20 07:32:42,850 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 269 [2023-12-20 07:32:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:42,851 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2023-12-20 07:32:42,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:32:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2023-12-20 07:32:42,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-20 07:32:42,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:42,853 INFO L195 NwaCegarLoop]: trace histogram [60, 57, 57, 42, 22, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:42,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:43,062 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 [2023-12-20 07:32:43,062 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:43,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 196927790, now seen corresponding path program 10 times [2023-12-20 07:32:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:43,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232311309] [2023-12-20 07:32:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:43,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:43,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [294929139] [2023-12-20 07:32:43,109 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 07:32:43,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:43,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:43,124 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:43,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 07:32:43,434 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 07:32:43,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:43,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 07:32:43,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2455 proven. 301 refuted. 0 times theorem prover too weak. 4301 trivial. 0 not checked. [2023-12-20 07:32:43,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7057 backedges. 2455 proven. 301 refuted. 0 times theorem prover too weak. 4301 trivial. 0 not checked. [2023-12-20 07:32:43,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232311309] [2023-12-20 07:32:43,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:43,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294929139] [2023-12-20 07:32:43,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294929139] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:43,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:43,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-12-20 07:32:43,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906241254] [2023-12-20 07:32:43,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:43,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 07:32:43,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 07:32:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-12-20 07:32:43,870 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand has 32 states, 32 states have (on average 3.625) internal successors, (116), 32 states have internal predecessors, (116), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:43,953 INFO L93 Difference]: Finished difference Result 300 states and 337 transitions. [2023-12-20 07:32:43,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-20 07:32:43,953 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.625) internal successors, (116), 32 states have internal predecessors, (116), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 281 [2023-12-20 07:32:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:43,954 INFO L225 Difference]: With dead ends: 300 [2023-12-20 07:32:43,954 INFO L226 Difference]: Without dead ends: 206 [2023-12-20 07:32:43,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-12-20 07:32:43,955 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:43,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 111 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 07:32:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-20 07:32:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-12-20 07:32:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.044776119402985) internal successors, (210), 201 states have internal predecessors, (210), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 216 transitions. [2023-12-20 07:32:43,960 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 216 transitions. Word has length 281 [2023-12-20 07:32:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:43,960 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 216 transitions. [2023-12-20 07:32:43,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.625) internal successors, (116), 32 states have internal predecessors, (116), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 07:32:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 216 transitions. [2023-12-20 07:32:43,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-20 07:32:43,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:43,968 INFO L195 NwaCegarLoop]: trace histogram [105, 105, 90, 60, 22, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:43,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-20 07:32:44,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 07:32:44,177 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:44,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1739036114, now seen corresponding path program 11 times [2023-12-20 07:32:44,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:44,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370309035] [2023-12-20 07:32:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:44,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:44,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:44,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168994879] [2023-12-20 07:32:44,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 07:32:44,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:44,252 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:44,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 07:32:44,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2023-12-20 07:32:44,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:32:44,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 07:32:44,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:32:44,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18793 backedges. 7998 proven. 40 refuted. 0 times theorem prover too weak. 10755 trivial. 0 not checked. [2023-12-20 07:32:44,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:32:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18793 backedges. 504 proven. 1248 refuted. 0 times theorem prover too weak. 17041 trivial. 0 not checked. [2023-12-20 07:32:44,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:32:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370309035] [2023-12-20 07:32:44,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:32:44,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168994879] [2023-12-20 07:32:44,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168994879] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:32:44,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:32:44,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-20 07:32:44,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072260445] [2023-12-20 07:32:44,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:32:44,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 07:32:44,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:32:44,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 07:32:44,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-12-20 07:32:44,668 INFO L87 Difference]: Start difference. First operand 206 states and 216 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:32:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:32:44,740 INFO L93 Difference]: Finished difference Result 372 states and 409 transitions. [2023-12-20 07:32:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 07:32:44,741 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 425 [2023-12-20 07:32:44,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:32:44,741 INFO L225 Difference]: With dead ends: 372 [2023-12-20 07:32:44,742 INFO L226 Difference]: Without dead ends: 230 [2023-12-20 07:32:44,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 834 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-12-20 07:32:44,742 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 07:32:44,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 38 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 07:32:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-20 07:32:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2023-12-20 07:32:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.0755555555555556) internal successors, (242), 225 states have internal predecessors, (242), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:32:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 248 transitions. [2023-12-20 07:32:44,749 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 248 transitions. Word has length 425 [2023-12-20 07:32:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:32:44,750 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 248 transitions. [2023-12-20 07:32:44,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:32:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 248 transitions. [2023-12-20 07:32:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-12-20 07:32:44,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:32:44,752 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 90, 60, 39, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:32:44,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-12-20 07:32:44,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:44,958 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:32:44,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:32:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash -785033298, now seen corresponding path program 12 times [2023-12-20 07:32:44,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:32:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228077181] [2023-12-20 07:32:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:32:44,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:32:45,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:32:45,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631027800] [2023-12-20 07:32:45,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 07:32:45,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:32:45,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:32:45,026 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:32:45,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 07:33:25,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-20 07:33:25,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:33:25,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 07:33:25,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:33:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 27253 backedges. 11276 proven. 253 refuted. 0 times theorem prover too weak. 15724 trivial. 0 not checked. [2023-12-20 07:33:26,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:33:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 27253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 27000 trivial. 0 not checked. [2023-12-20 07:33:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:33:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228077181] [2023-12-20 07:33:26,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:33:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631027800] [2023-12-20 07:33:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631027800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:33:26,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:33:26,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-12-20 07:33:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084969029] [2023-12-20 07:33:26,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:33:26,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-20 07:33:26,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:33:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-20 07:33:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 07:33:26,590 INFO L87 Difference]: Start difference. First operand 230 states and 248 transitions. Second operand has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:33:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:33:26,637 INFO L93 Difference]: Finished difference Result 394 states and 450 transitions. [2023-12-20 07:33:26,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 07:33:26,637 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 497 [2023-12-20 07:33:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:33:26,638 INFO L225 Difference]: With dead ends: 394 [2023-12-20 07:33:26,638 INFO L226 Difference]: Without dead ends: 254 [2023-12-20 07:33:26,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 946 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 07:33:26,639 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:33:26,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:33:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-12-20 07:33:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2023-12-20 07:33:26,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.0682730923694779) internal successors, (266), 249 states have internal predecessors, (266), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:33:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 272 transitions. [2023-12-20 07:33:26,646 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 272 transitions. Word has length 497 [2023-12-20 07:33:26,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:33:26,646 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 272 transitions. [2023-12-20 07:33:26,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 48 states have internal predecessors, (73), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:33:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 272 transitions. [2023-12-20 07:33:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-20 07:33:26,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:33:26,649 INFO L195 NwaCegarLoop]: trace histogram [129, 129, 90, 60, 46, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:33:26,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 07:33:26,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:33:26,876 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:33:26,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:33:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash 625623342, now seen corresponding path program 13 times [2023-12-20 07:33:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:33:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192735396] [2023-12-20 07:33:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:33:26,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:33:26,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:33:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246510386] [2023-12-20 07:33:26,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 07:33:26,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:33:26,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:33:26,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:33:26,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 07:33:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 07:33:27,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 07:33:27,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:33:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 28081 backedges. 9141 proven. 1365 refuted. 0 times theorem prover too weak. 17575 trivial. 0 not checked. [2023-12-20 07:33:27,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:33:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 28081 backedges. 1165 proven. 12639 refuted. 0 times theorem prover too weak. 14277 trivial. 0 not checked. [2023-12-20 07:33:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:33:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192735396] [2023-12-20 07:33:28,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:33:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246510386] [2023-12-20 07:33:28,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246510386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:33:28,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:33:28,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2023-12-20 07:33:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314423684] [2023-12-20 07:33:28,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:33:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 07:33:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:33:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 07:33:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 07:33:28,334 INFO L87 Difference]: Start difference. First operand 254 states and 272 transitions. Second operand has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:33:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:33:28,431 INFO L93 Difference]: Finished difference Result 447 states and 485 transitions. [2023-12-20 07:33:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-20 07:33:28,431 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 521 [2023-12-20 07:33:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:33:28,432 INFO L225 Difference]: With dead ends: 447 [2023-12-20 07:33:28,432 INFO L226 Difference]: Without dead ends: 257 [2023-12-20 07:33:28,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 979 SyntacticMatches, 30 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 07:33:28,433 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 07:33:28,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 07:33:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-20 07:33:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2023-12-20 07:33:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 252 states have (on average 1.0674603174603174) internal successors, (269), 252 states have internal predecessors, (269), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:33:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 275 transitions. [2023-12-20 07:33:28,440 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 275 transitions. Word has length 521 [2023-12-20 07:33:28,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:33:28,440 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 275 transitions. [2023-12-20 07:33:28,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:33:28,440 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 275 transitions. [2023-12-20 07:33:28,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-12-20 07:33:28,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:33:28,443 INFO L195 NwaCegarLoop]: trace histogram [132, 132, 93, 60, 46, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:33:28,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-20 07:33:28,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:33:28,651 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:33:28,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:33:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 286113159, now seen corresponding path program 14 times [2023-12-20 07:33:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:33:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896836314] [2023-12-20 07:33:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:33:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:33:28,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:33:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547799831] [2023-12-20 07:33:28,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 07:33:28,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:33:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:33:28,698 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:33:28,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-20 07:33:29,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 07:33:29,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:33:29,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-20 07:33:29,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:33:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 29260 backedges. 11796 proven. 2882 refuted. 0 times theorem prover too weak. 14582 trivial. 0 not checked. [2023-12-20 07:33:29,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:33:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 29260 backedges. 0 proven. 14682 refuted. 0 times theorem prover too weak. 14578 trivial. 0 not checked. [2023-12-20 07:33:30,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:33:30,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896836314] [2023-12-20 07:33:30,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:33:30,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547799831] [2023-12-20 07:33:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547799831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:33:30,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:33:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 62 [2023-12-20 07:33:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121666158] [2023-12-20 07:33:30,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:33:30,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 07:33:30,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:33:30,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 07:33:30,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 07:33:30,868 INFO L87 Difference]: Start difference. First operand 257 states and 275 transitions. Second operand has 62 states, 62 states have (on average 3.5806451612903225) internal successors, (222), 62 states have internal predecessors, (222), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:33:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:33:31,090 INFO L93 Difference]: Finished difference Result 498 states and 567 transitions. [2023-12-20 07:33:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 07:33:31,090 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.5806451612903225) internal successors, (222), 62 states have internal predecessors, (222), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 530 [2023-12-20 07:33:31,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:33:31,091 INFO L225 Difference]: With dead ends: 498 [2023-12-20 07:33:31,091 INFO L226 Difference]: Without dead ends: 305 [2023-12-20 07:33:31,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 968 SyntacticMatches, 30 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 07:33:31,093 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 07:33:31,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 74 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 07:33:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-20 07:33:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-12-20 07:33:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 300 states have (on average 1.11) internal successors, (333), 300 states have internal predecessors, (333), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:33:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 339 transitions. [2023-12-20 07:33:31,100 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 339 transitions. Word has length 530 [2023-12-20 07:33:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:33:31,100 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 339 transitions. [2023-12-20 07:33:31,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.5806451612903225) internal successors, (222), 62 states have internal predecessors, (222), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-20 07:33:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 339 transitions. [2023-12-20 07:33:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2023-12-20 07:33:31,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:33:31,104 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 46, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:33:31,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-20 07:33:31,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:33:31,312 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:33:31,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:33:31,312 INFO L85 PathProgramCache]: Analyzing trace with hash -19043705, now seen corresponding path program 15 times [2023-12-20 07:33:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:33:31,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662541170] [2023-12-20 07:33:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:33:31,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:33:31,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:33:31,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019316103] [2023-12-20 07:33:31,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 07:33:31,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:33:31,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:33:31,380 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:33:31,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-20 07:40:31,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2023-12-20 07:40:31,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 07:40:31,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 69 conjunts are in the unsatisfiable core [2023-12-20 07:40:31,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 07:40:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 51796 backedges. 21910 proven. 1081 refuted. 0 times theorem prover too weak. 28805 trivial. 0 not checked. [2023-12-20 07:40:31,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 07:40:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 51796 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 50715 trivial. 0 not checked. [2023-12-20 07:40:33,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 07:40:33,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662541170] [2023-12-20 07:40:33,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:40:33,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019316103] [2023-12-20 07:40:33,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019316103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 07:40:33,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 07:40:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 62 [2023-12-20 07:40:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843600386] [2023-12-20 07:40:33,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 07:40:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 07:40:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:40:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 07:40:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 07:40:33,014 INFO L87 Difference]: Start difference. First operand 305 states and 339 transitions. Second operand has 62 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:40:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 07:40:33,069 INFO L93 Difference]: Finished difference Result 509 states and 586 transitions. [2023-12-20 07:40:33,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 07:40:33,076 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 674 [2023-12-20 07:40:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 07:40:33,080 INFO L225 Difference]: With dead ends: 509 [2023-12-20 07:40:33,080 INFO L226 Difference]: Without dead ends: 318 [2023-12-20 07:40:33,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1346 GetRequests, 1251 SyntacticMatches, 35 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 07:40:33,081 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 07:40:33,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 105 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 07:40:33,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-12-20 07:40:33,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-12-20 07:40:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 313 states have (on average 1.1054313099041533) internal successors, (346), 313 states have internal predecessors, (346), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 07:40:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 352 transitions. [2023-12-20 07:40:33,090 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 352 transitions. Word has length 674 [2023-12-20 07:40:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 07:40:33,092 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 352 transitions. [2023-12-20 07:40:33,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-20 07:40:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 352 transitions. [2023-12-20 07:40:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2023-12-20 07:40:33,097 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 07:40:33,097 INFO L195 NwaCegarLoop]: trace histogram [180, 180, 93, 87, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 07:40:33,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-20 07:40:33,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:40:33,310 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 07:40:33,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 07:40:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash 121348846, now seen corresponding path program 16 times [2023-12-20 07:40:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 07:40:33,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900737038] [2023-12-20 07:40:33,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 07:40:33,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 07:40:33,385 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 07:40:33,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475036751] [2023-12-20 07:40:33,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 07:40:33,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:40:33,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 07:40:33,402 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 07:40:33,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 07:47:17,152 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 07:47:17,181 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 07:47:18,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 07:47:18,352 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forcibly destroying the process [2023-12-20 07:47:18,377 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-20 07:47:18,379 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 07:47:18,382 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forcibly destroying the process [2023-12-20 07:47:18,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 07:47:18,383 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 688 with TraceHistMax 180,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-20 07:47:18,386 INFO L445 BasicCegarLoop]: Path program histogram: [16, 3, 1, 1, 1, 1, 1] [2023-12-20 07:47:18,388 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 07:47:18,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 07:47:18 BoogieIcfgContainer [2023-12-20 07:47:18,390 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 07:47:18,390 INFO L158 Benchmark]: Toolchain (without parser) took 888318.32ms. Allocated memory was 333.4MB in the beginning and 412.1MB in the end (delta: 78.6MB). Free memory was 291.1MB in the beginning and 211.1MB in the end (delta: 79.9MB). Peak memory consumption was 159.6MB. Max. memory is 8.0GB. [2023-12-20 07:47:18,390 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 07:47:18,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.23ms. Allocated memory is still 333.4MB. Free memory was 291.1MB in the beginning and 279.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 07:47:18,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.66ms. Allocated memory is still 333.4MB. Free memory was 279.6MB in the beginning and 278.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 07:47:18,391 INFO L158 Benchmark]: Boogie Preprocessor took 50.43ms. Allocated memory is still 333.4MB. Free memory was 278.0MB in the beginning and 275.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 07:47:18,391 INFO L158 Benchmark]: RCFGBuilder took 295.87ms. Allocated memory is still 333.4MB. Free memory was 275.9MB in the beginning and 262.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 07:47:18,391 INFO L158 Benchmark]: TraceAbstraction took 887749.65ms. Allocated memory was 333.4MB in the beginning and 412.1MB in the end (delta: 78.6MB). Free memory was 261.7MB in the beginning and 211.1MB in the end (delta: 50.6MB). Peak memory consumption was 130.3MB. Max. memory is 8.0GB. [2023-12-20 07:47:18,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2023-12-20 07:47:18,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 137 Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.23ms. Allocated memory is still 333.4MB. Free memory was 291.1MB in the beginning and 279.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.66ms. Allocated memory is still 333.4MB. Free memory was 279.6MB in the beginning and 278.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.43ms. Allocated memory is still 333.4MB. Free memory was 278.0MB in the beginning and 275.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 295.87ms. Allocated memory is still 333.4MB. Free memory was 275.9MB in the beginning and 262.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 887749.65ms. Allocated memory was 333.4MB in the beginning and 412.1MB in the end (delta: 78.6MB). Free memory was 261.7MB in the beginning and 211.1MB in the end (delta: 50.6MB). Peak memory consumption was 130.3MB. 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: 61]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 61). Cancelled while NwaCegarLoop was analyzing trace of length 688 with TraceHistMax 180,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 887.7s, OverallIterations: 24, TraceHistogramMax: 180, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.1s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 1762 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1246 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1131 IncrementalHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 516 mSDtfsCounter, 1131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8863 GetRequests, 8280 SyntacticMatches, 129 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3382 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=23, InterpolantAutomatonStates: 499, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 23 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 462.3s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 4846 NumberOfCodeBlocks, 3234 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 8968 ConstructedInterpolants, 0 QuantifiedInterpolants, 10986 SizeOfPredicates, 4 NumberOfNonLiveVariables, 11921 ConjunctsInSsa, 347 ConjunctsInUnsatCore, 43 InterpolantComputations, 6 PerfectInterpolantSequences, 326910/366994 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