/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-patterns/array20_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 09:30:04,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 09:30:04,619 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 09:30:04,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 09:30:04,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 09:30:04,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 09:30:04,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 09:30:04,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 09:30:04,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 09:30:04,652 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 09:30:04,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 09:30:04,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 09:30:04,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 09:30:04,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 09:30:04,654 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 09:30:04,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 09:30:04,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 09:30:04,655 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 09:30:04,655 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 09:30:04,655 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 09:30:04,655 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 09:30:04,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 09:30:04,656 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 09:30:04,656 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 09:30:04,656 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 09:30:04,656 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 09:30:04,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 09:30:04,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 09:30:04,657 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 09:30:04,657 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:30:04,658 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 09:30:04,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 09:30:04,659 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 09:30:04,659 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 09:30:04,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 09:30:04,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 09:30:04,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 09:30:04,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 09:30:04,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 09:30:04,837 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 09:30:04,837 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 09:30:04,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array20_pattern.c [2023-12-20 09:30:05,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 09:30:05,975 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 09:30:05,976 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array20_pattern.c [2023-12-20 09:30:05,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc7b93407/18fa431702a64631a6820ab9873bfb07/FLAGb498864f3 [2023-12-20 09:30:05,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc7b93407/18fa431702a64631a6820ab9873bfb07 [2023-12-20 09:30:06,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 09:30:06,001 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 09:30:06,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 09:30:06,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 09:30:06,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 09:30:06,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:30:05" (1/1) ... [2023-12-20 09:30:06,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dcd1b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06, skipping insertion in model container [2023-12-20 09:30:06,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 09:30:05" (1/1) ... [2023-12-20 09:30:06,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 09:30:06,132 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-patterns/array20_pattern.c[1444,1457] [2023-12-20 09:30:06,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:30:06,164 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 09:30:06,172 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-patterns/array20_pattern.c[1444,1457] [2023-12-20 09:30:06,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 09:30:06,187 INFO L206 MainTranslator]: Completed translation [2023-12-20 09:30:06,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06 WrapperNode [2023-12-20 09:30:06,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 09:30:06,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 09:30:06,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 09:30:06,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 09:30:06,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,211 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2023-12-20 09:30:06,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 09:30:06,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 09:30:06,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 09:30:06,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 09:30:06,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,222 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,230 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-20 09:30:06,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 09:30:06,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 09:30:06,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 09:30:06,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 09:30:06,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (1/1) ... [2023-12-20 09:30:06,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 09:30:06,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:30:06,261 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 09:30:06,270 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 09:30:06,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 09:30:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 09:30:06,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 09:30:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 09:30:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 09:30:06,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 09:30:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 09:30:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 09:30:06,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 09:30:06,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 09:30:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 09:30:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 09:30:06,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 09:30:06,345 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 09:30:06,347 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 09:30:06,526 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 09:30:06,563 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 09:30:06,563 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-20 09:30:06,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:30:06 BoogieIcfgContainer [2023-12-20 09:30:06,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 09:30:06,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 09:30:06,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 09:30:06,567 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 09:30:06,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 09:30:05" (1/3) ... [2023-12-20 09:30:06,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb611f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:30:06, skipping insertion in model container [2023-12-20 09:30:06,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 09:30:06" (2/3) ... [2023-12-20 09:30:06,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb611f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 09:30:06, skipping insertion in model container [2023-12-20 09:30:06,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 09:30:06" (3/3) ... [2023-12-20 09:30:06,570 INFO L112 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2023-12-20 09:30:06,581 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 09:30:06,581 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 09:30:06,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 09:30:06,619 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;@68e65a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 09:30:06,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 09:30:06,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 09:30:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-20 09:30:06,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:30:06,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:30:06,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:30:06,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:30:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1876061686, now seen corresponding path program 1 times [2023-12-20 09:30:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:30:06,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743113050] [2023-12-20 09:30:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:30:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:30:06,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:30:06,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743113050] [2023-12-20 09:30:06,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 09:30:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444860468] [2023-12-20 09:30:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:06,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:30:06,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:30:06,717 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 09:30:06,727 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 09:30:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:30:06,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 09:30:06,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:30:06,802 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 09:30:06,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:30:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444860468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:30:06,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:30:06,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 09:30:06,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252015053] [2023-12-20 09:30:06,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:30:06,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 09:30:06,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:30:06,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 09:30:06,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 09:30:06,844 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 09:30:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:30:06,861 INFO L93 Difference]: Finished difference Result 54 states and 88 transitions. [2023-12-20 09:30:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 09:30:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-12-20 09:30:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:30:06,867 INFO L225 Difference]: With dead ends: 54 [2023-12-20 09:30:06,867 INFO L226 Difference]: Without dead ends: 26 [2023-12-20 09:30:06,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 09:30:06,872 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:30:06,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:30:06,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-20 09:30:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-20 09:30:06,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 09:30:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2023-12-20 09:30:06,902 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2023-12-20 09:30:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:30:06,902 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2023-12-20 09:30:06,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 09:30:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2023-12-20 09:30:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-20 09:30:06,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:30:06,904 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:30:06,913 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 09:30:07,108 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 09:30:07,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:30:07,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:30:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash -364244922, now seen corresponding path program 1 times [2023-12-20 09:30:07,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:30:07,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750100295] [2023-12-20 09:30:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:07,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:30:07,126 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:30:07,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834582055] [2023-12-20 09:30:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:07,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:30:07,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:30:07,133 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 09:30:07,152 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 09:30:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:30:07,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 09:30:07,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:30:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 09:30:07,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:30:07,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:30:07,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750100295] [2023-12-20 09:30:07,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:30:07,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834582055] [2023-12-20 09:30:07,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834582055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:30:07,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:30:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 09:30:07,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766349184] [2023-12-20 09:30:07,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:30:07,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:30:07,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:30:07,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:30:07,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:30:07,272 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 09:30:07,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:30:07,295 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2023-12-20 09:30:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:30:07,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-12-20 09:30:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:30:07,296 INFO L225 Difference]: With dead ends: 33 [2023-12-20 09:30:07,296 INFO L226 Difference]: Without dead ends: 29 [2023-12-20 09:30:07,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 09:30:07,297 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:30:07,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 72 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:30:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-20 09:30:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-20 09:30:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 09:30:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2023-12-20 09:30:07,302 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 29 [2023-12-20 09:30:07,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:30:07,303 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2023-12-20 09:30:07,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 09:30:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2023-12-20 09:30:07,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-20 09:30:07,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:30:07,303 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:30:07,313 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 09:30:07,513 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 09:30:07,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:30:07,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:30:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash -315688640, now seen corresponding path program 1 times [2023-12-20 09:30:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:30:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923817311] [2023-12-20 09:30:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:30:07,525 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:30:07,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856819237] [2023-12-20 09:30:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:07,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:30:07,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:30:07,526 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 09:30:07,536 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 09:30:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:30:07,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:30:07,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:30:07,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 09:30:07,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:30:07,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:30:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923817311] [2023-12-20 09:30:07,660 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:30:07,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856819237] [2023-12-20 09:30:07,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856819237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:30:07,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:30:07,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 09:30:07,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472132000] [2023-12-20 09:30:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:30:07,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 09:30:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:30:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 09:30:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 09:30:07,662 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 09:30:07,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:30:07,751 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2023-12-20 09:30:07,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 09:30:07,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2023-12-20 09:30:07,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:30:07,753 INFO L225 Difference]: With dead ends: 61 [2023-12-20 09:30:07,753 INFO L226 Difference]: Without dead ends: 37 [2023-12-20 09:30:07,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 09:30:07,757 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 09:30:07,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 71 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 09:30:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-20 09:30:07,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-12-20 09:30:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 09:30:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-12-20 09:30:07,769 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 33 [2023-12-20 09:30:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:30:07,769 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-12-20 09:30:07,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 09:30:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-12-20 09:30:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 09:30:07,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:30:07,770 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:30:07,775 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 09:30:07,974 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 09:30:07,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:30:07,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:30:07,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1044441326, now seen corresponding path program 1 times [2023-12-20 09:30:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:30:07,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252564425] [2023-12-20 09:30:07,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:07,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:30:07,984 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:30:07,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378382128] [2023-12-20 09:30:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:07,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:30:07,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:30:07,986 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 09:30:07,998 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 09:30:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:30:08,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 09:30:08,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:30:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 09:30:08,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 09:30:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 09:30:08,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252564425] [2023-12-20 09:30:08,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 09:30:08,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378382128] [2023-12-20 09:30:08,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378382128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 09:30:08,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 09:30:08,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 09:30:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088690409] [2023-12-20 09:30:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 09:30:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 09:30:08,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 09:30:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 09:30:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 09:30:08,050 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 09:30:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 09:30:08,083 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2023-12-20 09:30:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 09:30:08,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-12-20 09:30:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 09:30:08,083 INFO L225 Difference]: With dead ends: 57 [2023-12-20 09:30:08,083 INFO L226 Difference]: Without dead ends: 31 [2023-12-20 09:30:08,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 09:30:08,084 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 09:30:08,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 09:30:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-20 09:30:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-12-20 09:30:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 09:30:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2023-12-20 09:30:08,088 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 36 [2023-12-20 09:30:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 09:30:08,088 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2023-12-20 09:30:08,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-20 09:30:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2023-12-20 09:30:08,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 09:30:08,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 09:30:08,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 09:30:08,094 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 09:30:08,294 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 09:30:08,294 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 09:30:08,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 09:30:08,295 INFO L85 PathProgramCache]: Analyzing trace with hash -313799821, now seen corresponding path program 1 times [2023-12-20 09:30:08,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 09:30:08,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139939824] [2023-12-20 09:30:08,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:08,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 09:30:08,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 09:30:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232072801] [2023-12-20 09:30:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 09:30:08,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 09:30:08,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 09:30:08,305 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 09:30:08,327 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 09:30:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 09:30:08,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 09:30:08,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 09:30:08,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-20 09:30:08,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 09:30:08,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 09:30:08,927 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 173 treesize of output 165 [2023-12-20 09:30:08,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 09:30:08,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 165 treesize of output 730 [2023-12-20 09:30:18,184 WARN L293 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 412 DAG size of output: 179 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-20 09:30:18,185 INFO L349 Elim1Store]: treesize reduction 2918, result has 25.7 percent of original size [2023-12-20 09:30:18,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 12 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 15 new quantified variables, introduced 71 case distinctions, treesize of input 2446 treesize of output 11192 [2023-12-20 09:30:21,419 INFO L224 Elim1Store]: Index analysis took 1848 ms [2023-12-20 09:30:27,673 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse1 (* |ULTIMATE.start_main_~index1~0#1| 4294967295)) (.cse0 (* (mod |ULTIMATE.start_main_~index2~0#1| 4294967296) 4))) (= (select v_arrayElimArr_6 (+ 17179869184 |ULTIMATE.start_main_~#array~0#1.offset| .cse0 (* (mod (+ 4294967294 .cse1) 4294967296) (- 4)))) (select v_arrayElimArr_6 (+ (* (mod (+ 4294967295 ~ARR_SIZE~0 .cse1) 4294967296) (* ~ARR_SIZE~0 4)) |ULTIMATE.start_main_~#array~0#1.offset| .cse0)))) [2023-12-20 09:31:02,781 WARN L293 SmtUtils]: Spent 33.89s on a formula simplification. DAG size of input: 334 DAG size of output: 69 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-20 09:31:02,782 INFO L349 Elim1Store]: treesize reduction 5882, result has 3.4 percent of original size [2023-12-20 09:31:02,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 11 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 50 case distinctions, treesize of input 5698 treesize of output 10993 [2023-12-20 09:32:05,766 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 09:37:28,064 WARN L293 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 09:38:11,919 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-20 09:38:41,942 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 09:38:41,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2885 treesize of output 2774 [2023-12-20 09:38:42,697 INFO L349 Elim1Store]: treesize reduction 340, result has 54.4 percent of original size [2023-12-20 09:38:42,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 4808 treesize of output 5862 [2023-12-20 09:38:45,191 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:38:45,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:38:45,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 09:38:45,934 INFO L224 Elim1Store]: Index analysis took 744 ms [2023-12-20 09:38:45,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 514 treesize of output 449 [2023-12-20 09:38:46,336 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:38:46,422 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:38:46,453 INFO L349 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2023-12-20 09:38:46,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 305 treesize of output 103 [2023-12-20 09:38:46,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 09:38:46,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 60 [2023-12-20 09:38:46,745 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-12-20 09:38:46,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 39 [2023-12-20 09:38:48,889 INFO L349 Elim1Store]: treesize reduction 842, result has 22.8 percent of original size [2023-12-20 09:38:48,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 1976 treesize of output 2263 [2023-12-20 09:38:49,376 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:38:49,419 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:38:49,536 INFO L349 Elim1Store]: treesize reduction 113, result has 6.6 percent of original size [2023-12-20 09:38:49,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 545 treesize of output 352 [2023-12-20 09:38:51,456 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-12-20 09:38:51,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 72 [2023-12-20 09:38:51,589 INFO L349 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2023-12-20 09:38:51,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1098 treesize of output 1027 [2023-12-20 09:38:51,965 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-12-20 09:38:51,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 55 [2023-12-20 09:38:52,111 INFO L349 Elim1Store]: treesize reduction 87, result has 1.1 percent of original size [2023-12-20 09:38:52,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 796 treesize of output 727 [2023-12-20 09:38:54,882 INFO L349 Elim1Store]: treesize reduction 842, result has 22.8 percent of original size [2023-12-20 09:38:54,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 3650 treesize of output 3871 [2023-12-20 09:39:01,315 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:39:01,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 09:39:01,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 555 treesize of output 339 [2023-12-20 09:39:08,812 INFO L349 Elim1Store]: treesize reduction 65, result has 26.1 percent of original size [2023-12-20 09:39:08,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 359 treesize of output 307 [2023-12-20 09:39:12,267 INFO L349 Elim1Store]: treesize reduction 26, result has 46.9 percent of original size [2023-12-20 09:39:12,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1129 treesize of output 1075 [2023-12-20 09:39:14,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-20 09:39:14,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2023-12-20 09:39:19,800 WARN L293 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 413 DAG size of output: 155 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-20 09:39:19,800 INFO L349 Elim1Store]: treesize reduction 3364, result has 20.2 percent of original size [2023-12-20 09:39:19,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 12 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 15 new quantified variables, introduced 75 case distinctions, treesize of input 27178 treesize of output 31435 [2023-12-20 09:39:22,704 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:39:22,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:39:22,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 09:39:22,723 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:39:22,725 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:39:22,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-20 09:39:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 09:39:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-20 09:39:22,864 INFO L224 Elim1Store]: Index analysis took 140 ms [2023-12-20 09:39:22,888 INFO L349 Elim1Store]: treesize reduction 486, result has 0.2 percent of original size [2023-12-20 09:39:22,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 11 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 12 case distinctions, treesize of input 2558 treesize of output 9006 [2023-12-20 09:40:10,735 WARN L293 SmtUtils]: Spent 47.43s on a formula simplification. DAG size of input: 1001 DAG size of output: 372 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-20 09:40:10,736 INFO L349 Elim1Store]: treesize reduction 9373, result has 18.8 percent of original size [2023-12-20 09:40:10,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 33 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 37 new quantified variables, introduced 237 case distinctions, treesize of input 8046 treesize of output 77601 Received shutdown request... [2023-12-20 09:44:42,298 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 09:44:42,298 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 09:44:43,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 09:44:43,321 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 09:44:43,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 09:44:43,322 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 38 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-20 09:44:43,328 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-20 09:44:43,335 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 09:44:43,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 09:44:43 BoogieIcfgContainer [2023-12-20 09:44:43,344 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 09:44:43,346 INFO L158 Benchmark]: Toolchain (without parser) took 877344.26ms. Allocated memory was 280.0MB in the beginning and 493.9MB in the end (delta: 213.9MB). Free memory was 237.8MB in the beginning and 424.7MB in the end (delta: -186.9MB). Peak memory consumption was 300.8MB. Max. memory is 8.0GB. [2023-12-20 09:44:43,346 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 213.9MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 09:44:43,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.08ms. Allocated memory is still 280.0MB. Free memory was 237.5MB in the beginning and 226.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 09:44:43,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.46ms. Allocated memory is still 280.0MB. Free memory was 226.0MB in the beginning and 224.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 09:44:43,347 INFO L158 Benchmark]: Boogie Preprocessor took 25.02ms. Allocated memory is still 280.0MB. Free memory was 224.2MB in the beginning and 222.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 09:44:43,347 INFO L158 Benchmark]: RCFGBuilder took 324.44ms. Allocated memory is still 280.0MB. Free memory was 222.1MB in the beginning and 207.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-20 09:44:43,347 INFO L158 Benchmark]: TraceAbstraction took 876779.13ms. Allocated memory was 280.0MB in the beginning and 493.9MB in the end (delta: 213.9MB). Free memory was 206.8MB in the beginning and 424.7MB in the end (delta: -217.9MB). Peak memory consumption was 270.4MB. Max. memory is 8.0GB. [2023-12-20 09:44:43,348 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 213.9MB. Free memory is still 165.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.08ms. Allocated memory is still 280.0MB. Free memory was 237.5MB in the beginning and 226.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.46ms. Allocated memory is still 280.0MB. Free memory was 226.0MB in the beginning and 224.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.02ms. Allocated memory is still 280.0MB. Free memory was 224.2MB in the beginning and 222.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 324.44ms. Allocated memory is still 280.0MB. Free memory was 222.1MB in the beginning and 207.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 876779.13ms. Allocated memory was 280.0MB in the beginning and 493.9MB in the end (delta: 213.9MB). Free memory was 206.8MB in the beginning and 424.7MB in the end (delta: -217.9MB). Peak memory consumption was 270.4MB. 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: 34]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 34). Cancelled while NwaCegarLoop was analyzing trace of length 38 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 876.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 220 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 117 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 108 mSDtfsCounter, 117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 184 SizeOfPredicates, 8 NumberOfNonLiveVariables, 411 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 41/41 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