/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-multidimensional/min-2-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 09:17:35,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 09:17:35,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 09:17:35,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 09:17:35,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 09:17:35,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 09:17:35,482 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 09:17:35,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 09:17:35,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 09:17:35,485 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 09:17:35,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 09:17:35,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 09:17:35,487 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 09:17:35,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 09:17:35,488 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 09:17:35,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 09:17:35,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 09:17:35,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 09:17:35,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 09:17:35,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 09:17:35,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 09:17:35,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 09:17:35,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 09:17:35,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 09:17:35,489 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 09:17:35,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 09:17:35,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 09:17:35,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 09:17:35,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 09:17:35,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 09:17:35,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 09:17:35,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 09:17:35,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:17:35,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 09:17:35,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 09:17:35,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 09:17:35,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 09:17:35,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 09:17:35,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 09:17:35,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 09:17:35,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 09:17:35,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 09:17:35,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 09:17:35,493 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 09:17:35,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 09:17:35,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 09:17:35,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 09:17:35,668 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 09:17:35,668 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 09:17:35,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/min-2-u.c [2023-12-20 09:17:36,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 09:17:36,994 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 09:17:36,995 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/min-2-u.c [2023-12-20 09:17:37,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7147934d2/ebc6045f844a48fbb24a8e9e1365f98e/FLAGd156644c6 [2023-12-20 09:17:37,028 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7147934d2/ebc6045f844a48fbb24a8e9e1365f98e [2023-12-20 09:17:37,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 09:17:37,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 09:17:37,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 09:17:37,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 09:17:37,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 09:17:37,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c424a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37, skipping insertion in model container [2023-12-20 09:17:37,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,067 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 09:17:37,180 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/min-2-u.c[319,332] [2023-12-20 09:17:37,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:17:37,201 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 09:17:37,211 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/min-2-u.c[319,332] [2023-12-20 09:17:37,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:17:37,226 INFO L206 MainTranslator]: Completed translation [2023-12-20 09:17:37,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37 WrapperNode [2023-12-20 09:17:37,227 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 09:17:37,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 09:17:37,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 09:17:37,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 09:17:37,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,261 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-12-20 09:17:37,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 09:17:37,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 09:17:37,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 09:17:37,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 09:17:37,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,280 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,294 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-20 09:17:37,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,297 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 09:17:37,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 09:17:37,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 09:17:37,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 09:17:37,306 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (1/1) ... [2023-12-20 09:17:37,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:17:37,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:37,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 09:17:37,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 09:17:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 09:17:37,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 09:17:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 09:17:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 09:17:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 09:17:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 09:17:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 09:17:37,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 09:17:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 09:17:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 09:17:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 09:17:37,446 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 09:17:37,448 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 09:17:37,592 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 09:17:37,610 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 09:17:37,610 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-20 09:17:37,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:17:37 BoogieIcfgContainer [2023-12-20 09:17:37,610 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 09:17:37,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 09:17:37,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 09:17:37,614 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 09:17:37,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:17:37" (1/3) ... [2023-12-20 09:17:37,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34648748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:17:37, skipping insertion in model container [2023-12-20 09:17:37,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:17:37" (2/3) ... [2023-12-20 09:17:37,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34648748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:17:37, skipping insertion in model container [2023-12-20 09:17:37,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:17:37" (3/3) ... [2023-12-20 09:17:37,616 INFO L112 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2023-12-20 09:17:37,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 09:17:37,628 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 09:17:37,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 09:17:37,661 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;@1d4ff2ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 09:17:37,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 09:17:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:37,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-20 09:17:37,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:37,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:37,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:37,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:37,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1260479934, now seen corresponding path program 1 times [2023-12-20 09:17:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:37,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415224289] [2023-12-20 09:17:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:37,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:37,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850438072] [2023-12-20 09:17:37,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:37,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:37,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:37,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:37,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 09:17:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:17:37,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:17:37,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:17:37,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:17:37,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415224289] [2023-12-20 09:17:37,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:37,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850438072] [2023-12-20 09:17:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850438072] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:17:37,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:17:37,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 09:17:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560632239] [2023-12-20 09:17:37,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:17:37,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 09:17:37,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 09:17:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 09:17:37,881 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:37,927 INFO L93 Difference]: Finished difference Result 42 states and 72 transitions. [2023-12-20 09:17:37,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 09:17:37,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-20 09:17:37,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:37,934 INFO L225 Difference]: With dead ends: 42 [2023-12-20 09:17:37,934 INFO L226 Difference]: Without dead ends: 21 [2023-12-20 09:17:37,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 09:17:37,941 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:37,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 30 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:17:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-20 09:17:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-12-20 09:17:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:37,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-12-20 09:17:37,964 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2023-12-20 09:17:37,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:37,964 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-12-20 09:17:37,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:37,964 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-12-20 09:17:37,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-20 09:17:37,965 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:37,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:37,976 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 09:17:38,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 09:17:38,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:38,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash 800318851, now seen corresponding path program 1 times [2023-12-20 09:17:38,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001124423] [2023-12-20 09:17:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:38,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:38,193 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:38,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812252050] [2023-12-20 09:17:38,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:38,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:38,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:38,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 09:17:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:17:38,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:17:38,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:17:38,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:17:38,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:38,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001124423] [2023-12-20 09:17:38,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:38,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812252050] [2023-12-20 09:17:38,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812252050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:17:38,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:17:38,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 09:17:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864613557] [2023-12-20 09:17:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:17:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:17:38,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:17:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:17:38,307 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:38,361 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2023-12-20 09:17:38,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:17:38,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-20 09:17:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:38,362 INFO L225 Difference]: With dead ends: 48 [2023-12-20 09:17:38,362 INFO L226 Difference]: Without dead ends: 31 [2023-12-20 09:17:38,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:17:38,363 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:38,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 19 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:17:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-20 09:17:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2023-12-20 09:17:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-20 09:17:38,367 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2023-12-20 09:17:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:38,367 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-20 09:17:38,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-20 09:17:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 09:17:38,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:38,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:38,378 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 09:17:38,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 09:17:38,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:38,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:38,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1845944019, now seen corresponding path program 1 times [2023-12-20 09:17:38,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:38,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902391229] [2023-12-20 09:17:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:38,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:38,579 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903692638] [2023-12-20 09:17:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:38,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:38,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:38,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:38,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 09:17:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:17:38,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:17:38,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:17:38,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:17:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 09:17:38,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:38,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902391229] [2023-12-20 09:17:38,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:38,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903692638] [2023-12-20 09:17:38,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903692638] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:17:38,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:17:38,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-20 09:17:38,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843889929] [2023-12-20 09:17:38,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:17:38,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 09:17:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:38,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 09:17:38,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 09:17:38,662 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:38,733 INFO L93 Difference]: Finished difference Result 72 states and 97 transitions. [2023-12-20 09:17:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 09:17:38,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-20 09:17:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:38,734 INFO L225 Difference]: With dead ends: 72 [2023-12-20 09:17:38,734 INFO L226 Difference]: Without dead ends: 52 [2023-12-20 09:17:38,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-20 09:17:38,735 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 143 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:38,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 27 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:17:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-20 09:17:38,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2023-12-20 09:17:38,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:38,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2023-12-20 09:17:38,742 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 13 [2023-12-20 09:17:38,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:38,742 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2023-12-20 09:17:38,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:38,742 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2023-12-20 09:17:38,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 09:17:38,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:38,743 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:38,748 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 09:17:38,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:38,948 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:38,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash 888832003, now seen corresponding path program 2 times [2023-12-20 09:17:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:38,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140844525] [2023-12-20 09:17:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:38,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:38,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501944942] [2023-12-20 09:17:38,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 09:17:38,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:38,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:38,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:38,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 09:17:39,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-20 09:17:39,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:17:39,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 09:17:39,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 09:17:39,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:17:39,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140844525] [2023-12-20 09:17:39,036 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:39,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501944942] [2023-12-20 09:17:39,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501944942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:17:39,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:17:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 09:17:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137983574] [2023-12-20 09:17:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:17:39,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:17:39,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:17:39,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:17:39,038 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:39,069 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2023-12-20 09:17:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:17:39,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-20 09:17:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:39,071 INFO L225 Difference]: With dead ends: 99 [2023-12-20 09:17:39,071 INFO L226 Difference]: Without dead ends: 81 [2023-12-20 09:17:39,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:17:39,072 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:39,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:17:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-20 09:17:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 44. [2023-12-20 09:17:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2023-12-20 09:17:39,079 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 16 [2023-12-20 09:17:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:39,080 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2023-12-20 09:17:39,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2023-12-20 09:17:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-20 09:17:39,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:39,080 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:39,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 09:17:39,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:39,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:39,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:39,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1826388551, now seen corresponding path program 1 times [2023-12-20 09:17:39,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:39,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854482748] [2023-12-20 09:17:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:39,316 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840344295] [2023-12-20 09:17:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:39,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:39,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:39,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:39,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 09:17:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:17:39,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 09:17:39,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 09:17:39,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:17:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-20 09:17:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:39,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854482748] [2023-12-20 09:17:39,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:39,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840344295] [2023-12-20 09:17:39,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840344295] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:17:39,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:17:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-20 09:17:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947204796] [2023-12-20 09:17:39,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:17:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 09:17:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 09:17:39,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-12-20 09:17:39,483 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:39,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:39,652 INFO L93 Difference]: Finished difference Result 147 states and 192 transitions. [2023-12-20 09:17:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 09:17:39,652 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-20 09:17:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:39,653 INFO L225 Difference]: With dead ends: 147 [2023-12-20 09:17:39,653 INFO L226 Difference]: Without dead ends: 105 [2023-12-20 09:17:39,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-12-20 09:17:39,654 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 169 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:39,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 71 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 09:17:39,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-20 09:17:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2023-12-20 09:17:39,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2023-12-20 09:17:39,664 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2023-12-20 09:17:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:39,664 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2023-12-20 09:17:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2023-12-20 09:17:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 09:17:39,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:39,665 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:39,675 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 09:17:39,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:39,871 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:39,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:39,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1010214521, now seen corresponding path program 2 times [2023-12-20 09:17:39,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:39,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086078454] [2023-12-20 09:17:39,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:39,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:39,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:39,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928959470] [2023-12-20 09:17:39,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 09:17:39,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:39,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:39,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:39,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 09:17:39,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 09:17:39,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:17:39,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 09:17:39,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-20 09:17:40,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:17:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-20 09:17:40,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086078454] [2023-12-20 09:17:40,300 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:40,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928959470] [2023-12-20 09:17:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928959470] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:17:40,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:17:40,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-20 09:17:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170430010] [2023-12-20 09:17:40,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:17:40,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 09:17:40,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 09:17:40,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-12-20 09:17:40,302 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:40,693 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2023-12-20 09:17:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 09:17:40,693 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 09:17:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:40,695 INFO L225 Difference]: With dead ends: 297 [2023-12-20 09:17:40,695 INFO L226 Difference]: Without dead ends: 213 [2023-12-20 09:17:40,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 09:17:40,696 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 525 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:40,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 115 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 09:17:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-12-20 09:17:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 170. [2023-12-20 09:17:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2899408284023668) internal successors, (218), 169 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 218 transitions. [2023-12-20 09:17:40,710 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 218 transitions. Word has length 55 [2023-12-20 09:17:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:40,710 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 218 transitions. [2023-12-20 09:17:40,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 218 transitions. [2023-12-20 09:17:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 09:17:40,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:40,711 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:40,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-20 09:17:40,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:40,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:40,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash -848390151, now seen corresponding path program 3 times [2023-12-20 09:17:40,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:40,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711502428] [2023-12-20 09:17:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:40,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:40,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:40,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237040063] [2023-12-20 09:17:40,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 09:17:40,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:40,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:40,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:40,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 09:17:41,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-20 09:17:41,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:17:41,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:17:41,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 09:17:41,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:17:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2023-12-20 09:17:41,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711502428] [2023-12-20 09:17:41,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237040063] [2023-12-20 09:17:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237040063] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:17:41,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:17:41,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-20 09:17:41,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375449285] [2023-12-20 09:17:41,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:17:41,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 09:17:41,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 09:17:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 09:17:41,354 INFO L87 Difference]: Start difference. First operand 170 states and 218 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:41,445 INFO L93 Difference]: Finished difference Result 765 states and 980 transitions. [2023-12-20 09:17:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 09:17:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-20 09:17:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:41,448 INFO L225 Difference]: With dead ends: 765 [2023-12-20 09:17:41,448 INFO L226 Difference]: Without dead ends: 693 [2023-12-20 09:17:41,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-20 09:17:41,449 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 129 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:41,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 26 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:17:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-20 09:17:41,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 377. [2023-12-20 09:17:41,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.3138297872340425) internal successors, (494), 376 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 494 transitions. [2023-12-20 09:17:41,475 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 494 transitions. Word has length 103 [2023-12-20 09:17:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:41,475 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 494 transitions. [2023-12-20 09:17:41,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 494 transitions. [2023-12-20 09:17:41,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-20 09:17:41,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:41,478 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 88, 22, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:41,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 09:17:41,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:41,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:41,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:41,700 INFO L85 PathProgramCache]: Analyzing trace with hash -510070077, now seen corresponding path program 4 times [2023-12-20 09:17:41,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:41,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321835892] [2023-12-20 09:17:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:41,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:41,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:41,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980217107] [2023-12-20 09:17:41,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 09:17:41,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:41,729 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:41,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 09:17:41,903 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 09:17:41,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:17:41,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 09:17:41,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:17:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12112 backedges. 651 proven. 9062 refuted. 0 times theorem prover too weak. 2399 trivial. 0 not checked. [2023-12-20 09:17:42,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:17:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12112 backedges. 651 proven. 9062 refuted. 0 times theorem prover too weak. 2399 trivial. 0 not checked. [2023-12-20 09:17:43,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:17:43,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321835892] [2023-12-20 09:17:43,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:17:43,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980217107] [2023-12-20 09:17:43,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980217107] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:17:43,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:17:43,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 58 [2023-12-20 09:17:43,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218708239] [2023-12-20 09:17:43,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:17:43,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 09:17:43,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:17:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 09:17:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1145, Invalid=2161, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 09:17:43,504 INFO L87 Difference]: Start difference. First operand 377 states and 494 transitions. Second operand has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:17:46,093 INFO L93 Difference]: Finished difference Result 1964 states and 2418 transitions. [2023-12-20 09:17:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-20 09:17:46,094 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2023-12-20 09:17:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:17:46,102 INFO L225 Difference]: With dead ends: 1964 [2023-12-20 09:17:46,103 INFO L226 Difference]: Without dead ends: 1892 [2023-12-20 09:17:46,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10069 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=8406, Invalid=18000, Unknown=0, NotChecked=0, Total=26406 [2023-12-20 09:17:46,110 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1120 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 09:17:46,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 958 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 09:17:46,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-12-20 09:17:46,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 791. [2023-12-20 09:17:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.3240506329113924) internal successors, (1046), 790 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1046 transitions. [2023-12-20 09:17:46,173 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1046 transitions. Word has length 310 [2023-12-20 09:17:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:17:46,174 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1046 transitions. [2023-12-20 09:17:46,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.2586206896551726) internal successors, (189), 58 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:17:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1046 transitions. [2023-12-20 09:17:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2023-12-20 09:17:46,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:17:46,193 INFO L195 NwaCegarLoop]: trace histogram [220, 220, 220, 22, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:17:46,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 09:17:46,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-20 09:17:46,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:17:46,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:17:46,401 INFO L85 PathProgramCache]: Analyzing trace with hash -305149, now seen corresponding path program 5 times [2023-12-20 09:17:46,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:17:46,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125202854] [2023-12-20 09:17:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:17:46,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:17:46,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:17:46,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897225386] [2023-12-20 09:17:46,441 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 09:17:46,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:17:46,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:17:46,458 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:17:46,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 09:26:03,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 184 check-sat command(s) [2023-12-20 09:26:03,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:26:03,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 09:26:03,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:26:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 74869 backedges. 34471 proven. 715 refuted. 0 times theorem prover too weak. 39683 trivial. 0 not checked. [2023-12-20 09:26:04,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:26:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 74869 backedges. 31477 proven. 3709 refuted. 0 times theorem prover too weak. 39683 trivial. 0 not checked. [2023-12-20 09:26:04,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:26:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125202854] [2023-12-20 09:26:04,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:26:04,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897225386] [2023-12-20 09:26:04,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897225386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:26:04,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:26:04,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-20 09:26:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231933919] [2023-12-20 09:26:04,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:26:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-20 09:26:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:26:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-20 09:26:04,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 09:26:04,928 INFO L87 Difference]: Start difference. First operand 791 states and 1046 transitions. Second operand has 50 states, 50 states have (on average 3.48) internal successors, (174), 49 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:26:06,008 INFO L93 Difference]: Finished difference Result 2487 states and 3504 transitions. [2023-12-20 09:26:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 09:26:06,009 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.48) internal successors, (174), 49 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 724 [2023-12-20 09:26:06,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:26:06,014 INFO L225 Difference]: With dead ends: 2487 [2023-12-20 09:26:06,015 INFO L226 Difference]: Without dead ends: 1698 [2023-12-20 09:26:06,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1398 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2023-12-20 09:26:06,021 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 981 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 09:26:06,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 219 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 09:26:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2023-12-20 09:26:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1607. [2023-12-20 09:26:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 1.323785803237858) internal successors, (2126), 1606 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:06,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2126 transitions. [2023-12-20 09:26:06,125 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2126 transitions. Word has length 724 [2023-12-20 09:26:06,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:26:06,125 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2126 transitions. [2023-12-20 09:26:06,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.48) internal successors, (174), 49 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:06,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2126 transitions. [2023-12-20 09:26:06,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1469 [2023-12-20 09:26:06,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:26:06,156 INFO L195 NwaCegarLoop]: trace histogram [460, 460, 460, 46, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:26:06,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 09:26:06,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:26:06,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:26:06,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:26:06,381 INFO L85 PathProgramCache]: Analyzing trace with hash 983536899, now seen corresponding path program 6 times [2023-12-20 09:26:06,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:26:06,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412058182] [2023-12-20 09:26:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:26:06,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:26:06,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:26:06,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634751791] [2023-12-20 09:26:06,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 09:26:06,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:26:06,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:26:06,467 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 09:26:06,482 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 09:26:06,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-20 09:26:06,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:26:06,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:26:06,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:26:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 322537 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 322536 trivial. 0 not checked. [2023-12-20 09:26:06,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:26:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 322537 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 322536 trivial. 0 not checked. [2023-12-20 09:26:06,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:26:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412058182] [2023-12-20 09:26:06,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:26:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634751791] [2023-12-20 09:26:06,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634751791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:26:06,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:26:06,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-20 09:26:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421626059] [2023-12-20 09:26:06,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:26:06,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 09:26:06,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:26:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 09:26:06,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 09:26:06,965 INFO L87 Difference]: Start difference. First operand 1607 states and 2126 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:26:07,123 INFO L93 Difference]: Finished difference Result 3310 states and 4352 transitions. [2023-12-20 09:26:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 09:26:07,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1468 [2023-12-20 09:26:07,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:26:07,146 INFO L225 Difference]: With dead ends: 3310 [2023-12-20 09:26:07,147 INFO L226 Difference]: Without dead ends: 1754 [2023-12-20 09:26:07,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2934 GetRequests, 2930 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 09:26:07,149 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:26:07,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:26:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2023-12-20 09:26:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1754. [2023-12-20 09:26:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1753 states have (on average 1.298345693097547) internal successors, (2276), 1753 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2276 transitions. [2023-12-20 09:26:07,294 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2276 transitions. Word has length 1468 [2023-12-20 09:26:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:26:07,294 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2276 transitions. [2023-12-20 09:26:07,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2276 transitions. [2023-12-20 09:26:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1616 [2023-12-20 09:26:07,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:26:07,312 INFO L195 NwaCegarLoop]: trace histogram [460, 460, 460, 184, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:26:07,317 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 09:26:07,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 09:26:07,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:26:07,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:26:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1643036414, now seen corresponding path program 7 times [2023-12-20 09:26:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:26:07,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846759875] [2023-12-20 09:26:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:26:07,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:26:07,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:26:07,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235327904] [2023-12-20 09:26:07,638 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 09:26:07,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:26:07,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:26:07,654 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 09:26:07,662 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 09:26:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:26:08,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 5486 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-20 09:26:08,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:26:09,714 INFO L134 CoverageAnalysis]: Checked inductivity of 339049 backedges. 6631 proven. 1081 refuted. 0 times theorem prover too weak. 331337 trivial. 0 not checked. [2023-12-20 09:26:09,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:26:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 339049 backedges. 6631 proven. 1081 refuted. 0 times theorem prover too weak. 331337 trivial. 0 not checked. [2023-12-20 09:26:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:26:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846759875] [2023-12-20 09:26:11,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:26:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235327904] [2023-12-20 09:26:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235327904] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:26:11,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:26:11,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97 [2023-12-20 09:26:11,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643866222] [2023-12-20 09:26:11,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:26:11,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-12-20 09:26:11,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:26:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-12-20 09:26:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4659, Invalid=4847, Unknown=0, NotChecked=0, Total=9506 [2023-12-20 09:26:11,283 INFO L87 Difference]: Start difference. First operand 1754 states and 2276 transitions. Second operand has 98 states, 98 states have (on average 1.183673469387755) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:26:16,407 INFO L93 Difference]: Finished difference Result 5422 states and 7620 transitions. [2023-12-20 09:26:16,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-20 09:26:16,408 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.183673469387755) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1615 [2023-12-20 09:26:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:26:16,416 INFO L225 Difference]: With dead ends: 5422 [2023-12-20 09:26:16,416 INFO L226 Difference]: Without dead ends: 3717 [2023-12-20 09:26:16,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3275 GetRequests, 3132 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9265, Invalid=11615, Unknown=0, NotChecked=0, Total=20880 [2023-12-20 09:26:16,421 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3227 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3227 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 09:26:16,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3227 Valid, 407 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 09:26:16,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2023-12-20 09:26:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 3530. [2023-12-20 09:26:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 3529 states have (on average 1.297818078775857) internal successors, (4580), 3529 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 4580 transitions. [2023-12-20 09:26:16,636 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 4580 transitions. Word has length 1615 [2023-12-20 09:26:16,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:26:16,637 INFO L495 AbstractCegarLoop]: Abstraction has 3530 states and 4580 transitions. [2023-12-20 09:26:16,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.183673469387755) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:26:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 4580 transitions. [2023-12-20 09:26:16,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3248 [2023-12-20 09:26:16,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:26:16,706 INFO L195 NwaCegarLoop]: trace histogram [940, 940, 940, 376, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:26:16,721 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 09:26:16,921 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 09:26:16,921 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:26:16,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:26:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash -908510466, now seen corresponding path program 8 times [2023-12-20 09:26:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:26:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771870214] [2023-12-20 09:26:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:26:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:26:17,136 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:26:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283977154] [2023-12-20 09:26:17,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 09:26:17,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:26:17,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:26:17,137 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 09:26:17,161 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 09:26:19,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 09:26:19,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:26:19,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 11054 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-20 09:26:19,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:26:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1405561 backedges. 27079 proven. 4465 refuted. 0 times theorem prover too weak. 1374017 trivial. 0 not checked. [2023-12-20 09:26:22,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:26:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1405561 backedges. 27079 proven. 4465 refuted. 0 times theorem prover too weak. 1374017 trivial. 0 not checked. [2023-12-20 09:26:27,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:26:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771870214] [2023-12-20 09:26:27,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:26:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283977154] [2023-12-20 09:26:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283977154] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:26:27,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:26:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 193 [2023-12-20 09:26:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438129440] [2023-12-20 09:26:27,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:26:27,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2023-12-20 09:26:27,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:26:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2023-12-20 09:26:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18531, Invalid=18911, Unknown=0, NotChecked=0, Total=37442 [2023-12-20 09:26:27,399 INFO L87 Difference]: Start difference. First operand 3530 states and 4580 transitions. Second operand has 194 states, 194 states have (on average 1.092783505154639) internal successors, (212), 193 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:27:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:27:09,694 INFO L93 Difference]: Finished difference Result 10894 states and 15300 transitions. [2023-12-20 09:27:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-20 09:27:09,694 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 1.092783505154639) internal successors, (212), 193 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3247 [2023-12-20 09:27:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:27:09,709 INFO L225 Difference]: With dead ends: 10894 [2023-12-20 09:27:09,709 INFO L226 Difference]: Without dead ends: 7461 [2023-12-20 09:27:09,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6587 GetRequests, 6300 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18145 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=36961, Invalid=46271, Unknown=0, NotChecked=0, Total=83232 [2023-12-20 09:27:09,715 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8445 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 2092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8445 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2092 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 09:27:09,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8445 Valid, 791 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2092 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 09:27:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7461 states. [2023-12-20 09:27:10,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7461 to 7082. [2023-12-20 09:27:10,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7082 states, 7081 states have (on average 1.297556842253919) internal successors, (9188), 7081 states have internal predecessors, (9188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:27:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7082 states to 7082 states and 9188 transitions. [2023-12-20 09:27:10,116 INFO L78 Accepts]: Start accepts. Automaton has 7082 states and 9188 transitions. Word has length 3247 [2023-12-20 09:27:10,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:27:10,117 INFO L495 AbstractCegarLoop]: Abstraction has 7082 states and 9188 transitions. [2023-12-20 09:27:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 1.092783505154639) internal successors, (212), 193 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:27:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7082 states and 9188 transitions. [2023-12-20 09:27:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6512 [2023-12-20 09:27:10,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:27:10,345 INFO L195 NwaCegarLoop]: trace histogram [1900, 1900, 1900, 760, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:27:10,371 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 09:27:10,548 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 09:27:10,548 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:27:10,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:27:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1662110978, now seen corresponding path program 9 times [2023-12-20 09:27:10,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:27:10,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552207027] [2023-12-20 09:27:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:27:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:27:10,965 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:27:10,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865354826] [2023-12-20 09:27:10,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 09:27:10,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:27:10,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:27:10,966 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 09:27:10,968 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 09:27:12,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-20 09:27:12,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 09:27:12,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 09:27:12,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:27:14,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-20 09:27:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5722777 backedges. 3818 proven. 0 refuted. 0 times theorem prover too weak. 5718959 trivial. 0 not checked. [2023-12-20 09:27:14,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:27:14,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:27:14,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552207027] [2023-12-20 09:27:14,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:27:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865354826] [2023-12-20 09:27:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865354826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:27:14,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:27:14,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 09:27:14,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503611596] [2023-12-20 09:27:14,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:27:14,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 09:27:14,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:27:14,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 09:27:14,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 09:27:14,469 INFO L87 Difference]: Start difference. First operand 7082 states and 9188 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:27:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:27:14,969 INFO L93 Difference]: Finished difference Result 13953 states and 18348 transitions. [2023-12-20 09:27:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 09:27:14,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6511 [2023-12-20 09:27:14,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:27:14,985 INFO L225 Difference]: With dead ends: 13953 [2023-12-20 09:27:14,985 INFO L226 Difference]: Without dead ends: 7649 [2023-12-20 09:27:14,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6511 GetRequests, 6506 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 09:27:14,991 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:27:14,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 25 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:27:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2023-12-20 09:27:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7082. [2023-12-20 09:27:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7082 states, 7081 states have (on average 1.297415619262816) internal successors, (9187), 7081 states have internal predecessors, (9187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:27:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7082 states to 7082 states and 9187 transitions. [2023-12-20 09:27:15,461 INFO L78 Accepts]: Start accepts. Automaton has 7082 states and 9187 transitions. Word has length 6511 [2023-12-20 09:27:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:27:15,462 INFO L495 AbstractCegarLoop]: Abstraction has 7082 states and 9187 transitions. [2023-12-20 09:27:15,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 09:27:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 7082 states and 9187 transitions. [2023-12-20 09:27:15,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6512 [2023-12-20 09:27:15,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:27:15,666 INFO L195 NwaCegarLoop]: trace histogram [1900, 1900, 1899, 760, 10, 10, 10, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:27:15,673 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 09:27:15,872 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 09:27:15,873 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:27:15,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:27:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1603796028, now seen corresponding path program 1 times [2023-12-20 09:27:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:27:15,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799338398] [2023-12-20 09:27:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:27:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:27:16,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:27:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [934989828] [2023-12-20 09:27:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:27:16,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:27:16,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:27:16,323 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 09:27:16,325 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 09:27:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:27:20,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 22188 conjuncts, 193 conjunts are in the unsatisfiable core [2023-12-20 09:27:21,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:27:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5722777 backedges. 109447 proven. 18145 refuted. 0 times theorem prover too weak. 5595185 trivial. 0 not checked. [2023-12-20 09:27:30,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:27:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5722777 backedges. 109447 proven. 18145 refuted. 0 times theorem prover too weak. 5595185 trivial. 0 not checked. [2023-12-20 09:27:52,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:27:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799338398] [2023-12-20 09:27:52,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:27:52,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934989828] [2023-12-20 09:27:52,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934989828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 09:27:52,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-20 09:27:52,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 385 [2023-12-20 09:27:52,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262754139] [2023-12-20 09:27:52,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-20 09:27:52,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 386 states [2023-12-20 09:27:52,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:27:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 386 interpolants. [2023-12-20 09:27:52,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73923, Invalid=74687, Unknown=0, NotChecked=0, Total=148610 [2023-12-20 09:27:52,685 INFO L87 Difference]: Start difference. First operand 7082 states and 9187 transitions. Second operand has 386 states, 386 states have (on average 1.049222797927461) internal successors, (405), 385 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 09:32:13,812 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 09:32:13,813 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 09:32:14,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 385 states. [2023-12-20 09:32:14,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13211 GetRequests, 12636 SyntacticMatches, 0 SemanticMatches, 575 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73153 ImplicationChecksByTransitivity, 59.1s TimeCoverageRelationStatistics Valid=147649, Invalid=184703, Unknown=0, NotChecked=0, Total=332352 [2023-12-20 09:32:14,023 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 7509 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 1987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7509 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 3630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1987 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 09:32:14,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7509 Valid, 528 Invalid, 3630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1987 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 09:32:14,025 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 09:32:14,079 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 09:32:14,252 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 09:32:14,253 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (7082states) and FLOYD_HOARE automaton (currently 385 states, 386 states before enhancement),while ReachableStatesComputation was computing reachable states (20097 states constructed, input type IntersectNwa). [2023-12-20 09:32:14,256 INFO L445 BasicCegarLoop]: Path program histogram: [9, 2, 1, 1, 1] [2023-12-20 09:32:14,258 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 09:32:14,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 09:32:14 BoogieIcfgContainer [2023-12-20 09:32:14,259 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 09:32:14,259 INFO L158 Benchmark]: Toolchain (without parser) took 877226.92ms. Allocated memory was 262.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 218.7MB in the beginning and 373.0MB in the end (delta: -154.3MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-20 09:32:14,259 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 218.1MB. Free memory is still 169.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 09:32:14,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.19ms. Allocated memory is still 262.1MB. Free memory was 218.4MB in the beginning and 207.5MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 09:32:14,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.58ms. Allocated memory is still 262.1MB. Free memory was 207.5MB in the beginning and 205.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 09:32:14,260 INFO L158 Benchmark]: Boogie Preprocessor took 42.50ms. Allocated memory is still 262.1MB. Free memory was 205.9MB in the beginning and 203.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 09:32:14,260 INFO L158 Benchmark]: RCFGBuilder took 305.01ms. Allocated memory is still 262.1MB. Free memory was 203.8MB in the beginning and 191.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 09:32:14,260 INFO L158 Benchmark]: TraceAbstraction took 876647.09ms. Allocated memory was 262.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 190.7MB in the beginning and 373.0MB in the end (delta: -182.2MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2023-12-20 09:32:14,261 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 218.1MB. Free memory is still 169.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.19ms. Allocated memory is still 262.1MB. Free memory was 218.4MB in the beginning and 207.5MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.58ms. Allocated memory is still 262.1MB. Free memory was 207.5MB in the beginning and 205.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.50ms. Allocated memory is still 262.1MB. Free memory was 205.9MB in the beginning and 203.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 305.01ms. Allocated memory is still 262.1MB. Free memory was 203.8MB in the beginning and 191.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 876647.09ms. Allocated memory was 262.1MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 190.7MB in the beginning and 373.0MB in the end (delta: -182.2MB). Peak memory consumption was 1.3GB. 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: 7]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 7). Cancelled while NwaCegarLoop was constructing difference of abstraction (7082states) and FLOYD_HOARE automaton (currently 385 states, 386 states before enhancement),while ReachableStatesComputation was computing reachable states (20097 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 876.6s, OverallIterations: 14, TraceHistogramMax: 1900, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.6s, AutomataDifference: 314.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22352 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22352 mSDsluCounter, 3278 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3033 mSDsCounter, 6170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5881 IncrementalHoareTripleChecker+Invalid, 12051 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6170 mSolverCounterUnsat, 245 mSDtfsCounter, 5881 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35239 GetRequests, 33920 SyntacticMatches, 0 SemanticMatches, 1319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107243 ImplicationChecksByTransitivity, 82.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7082occurred in iteration=12, InterpolantAutomatonStates: 527, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 2760 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.8s SsaConstructionTime, 502.3s SatisfiabilityAnalysisTime, 48.7s InterpolantComputationTime, 20625 NumberOfCodeBlocks, 12571 NumberOfCodeBlocksAsserted, 205 NumberOfCheckSat, 34678 ConstructedInterpolants, 0 QuantifiedInterpolants, 48311 SizeOfPredicates, 34 NumberOfNonLiveVariables, 42552 ConjunctsInSsa, 446 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 21408949/21479015 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