/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 20:59:57,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 20:59:57,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 20:59:57,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 20:59:57,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 20:59:57,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 20:59:57,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 20:59:57,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 20:59:57,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 20:59:57,754 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 20:59:57,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 20:59:57,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 20:59:57,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 20:59:57,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 20:59:57,757 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 20:59:57,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 20:59:57,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 20:59:57,757 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 20:59:57,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 20:59:57,759 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 20:59:57,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 20:59:57,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 20:59:57,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 20:59:57,760 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 20:59:57,760 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 20:59:57,760 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 20:59:57,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 20:59:57,761 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 20:59:57,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 20:59:57,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 20:59:57,762 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 20:59:57,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 20:59:57,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:59:57,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 20:59:57,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 20:59:57,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 20:59:57,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 20:59:57,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 20:59:57,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 20:59:57,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 20:59:57,764 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 20:59:57,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 20:59:57,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 20:59:57,764 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 20:59:57,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 20:59:58,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 20:59:58,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 20:59:58,017 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 20:59:58,017 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 20:59:58,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm1_unwindbound100.c [2023-12-19 20:59:59,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 20:59:59,301 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 20:59:59,302 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_unwindbound100.c [2023-12-19 20:59:59,308 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b5a39af/bdd2a7445ff749e68b5c88095d9c0da1/FLAGd93501bbc [2023-12-19 20:59:59,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b5a39af/bdd2a7445ff749e68b5c88095d9c0da1 [2023-12-19 20:59:59,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 20:59:59,320 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 20:59:59,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 20:59:59,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 20:59:59,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 20:59:59,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ab7d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59, skipping insertion in model container [2023-12-19 20:59:59,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,353 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 20:59:59,508 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_unwindbound100.c[552,565] [2023-12-19 20:59:59,542 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:59:59,553 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 20:59:59,562 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm1_unwindbound100.c[552,565] [2023-12-19 20:59:59,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 20:59:59,578 INFO L206 MainTranslator]: Completed translation [2023-12-19 20:59:59,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59 WrapperNode [2023-12-19 20:59:59,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 20:59:59,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 20:59:59,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 20:59:59,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 20:59:59,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,590 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,604 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2023-12-19 20:59:59,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 20:59:59,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 20:59:59,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 20:59:59,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 20:59:59,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,633 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-19 20:59:59,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 20:59:59,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 20:59:59,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 20:59:59,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 20:59:59,644 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (1/1) ... [2023-12-19 20:59:59,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 20:59:59,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 20:59:59,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 20:59:59,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 20:59:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 20:59:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 20:59:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 20:59:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 20:59:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 20:59:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 20:59:59,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 20:59:59,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-19 20:59:59,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-19 20:59:59,775 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 20:59:59,776 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 20:59:59,926 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 20:59:59,946 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 20:59:59,946 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-19 20:59:59,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:59:59 BoogieIcfgContainer [2023-12-19 20:59:59,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 20:59:59,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 20:59:59,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 20:59:59,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 20:59:59,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:59:59" (1/3) ... [2023-12-19 20:59:59,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318b7bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:59:59, skipping insertion in model container [2023-12-19 20:59:59,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:59:59" (2/3) ... [2023-12-19 20:59:59,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318b7bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:59:59, skipping insertion in model container [2023-12-19 20:59:59,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:59:59" (3/3) ... [2023-12-19 20:59:59,953 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound100.c [2023-12-19 20:59:59,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 20:59:59,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 21:00:00,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 21:00:00,010 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;@59c989cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 21:00:00,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 21:00:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 21:00:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 21:00:00,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:00:00,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:00:00,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:00:00,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:00:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash -365157677, now seen corresponding path program 1 times [2023-12-19 21:00:00,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:00:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784231253] [2023-12-19 21:00:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:00,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:00:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:00:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:00:00,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784231253] [2023-12-19 21:00:00,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 21:00:00,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227477104] [2023-12-19 21:00:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:00,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:00:00,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:00:00,146 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:00:00,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 21:00:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:00:00,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 21:00:00,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:00:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-19 21:00:00,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:00:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227477104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:00:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:00:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 21:00:00,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026282221] [2023-12-19 21:00:00,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:00:00,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 21:00:00,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:00:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 21:00:00,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 21:00:00,273 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-19 21:00:00,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:00:00,297 INFO L93 Difference]: Finished difference Result 62 states and 104 transitions. [2023-12-19 21:00:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 21:00:00,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2023-12-19 21:00:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:00:00,304 INFO L225 Difference]: With dead ends: 62 [2023-12-19 21:00:00,304 INFO L226 Difference]: Without dead ends: 30 [2023-12-19 21:00:00,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 21:00:00,310 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:00:00,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:00:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-19 21:00:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-19 21:00:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 21:00:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 42 transitions. [2023-12-19 21:00:00,340 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 42 transitions. Word has length 27 [2023-12-19 21:00:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:00:00,340 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 42 transitions. [2023-12-19 21:00:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-19 21:00:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2023-12-19 21:00:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 21:00:00,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:00:00,342 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:00:00,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 21:00:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 21:00:00,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:00:00,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:00:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1999673480, now seen corresponding path program 1 times [2023-12-19 21:00:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:00:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422357295] [2023-12-19 21:00:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:00,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:00:00,573 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:00:00,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962938005] [2023-12-19 21:00:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:00,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:00:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:00:00,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:00:00,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 21:00:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:00:00,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 21:00:00,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:00:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-19 21:00:00,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 21:00:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 21:00:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:00:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422357295] [2023-12-19 21:00:00,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:00:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962938005] [2023-12-19 21:00:00,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962938005] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 21:00:00,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 21:00:00,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-12-19 21:00:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684881281] [2023-12-19 21:00:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:00:00,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 21:00:00,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:00:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 21:00:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-19 21:00:00,999 INFO L87 Difference]: Start difference. First operand 30 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 21:00:05,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 21:00:09,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-19 21:00:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:00:09,872 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2023-12-19 21:00:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 21:00:09,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-19 21:00:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:00:09,874 INFO L225 Difference]: With dead ends: 50 [2023-12-19 21:00:09,874 INFO L226 Difference]: Without dead ends: 48 [2023-12-19 21:00:09,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-19 21:00:09,876 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 17 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-19 21:00:09,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 116 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2023-12-19 21:00:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-19 21:00:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2023-12-19 21:00:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 31 states have internal predecessors, (43), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-19 21:00:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 66 transitions. [2023-12-19 21:00:09,889 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 66 transitions. Word has length 28 [2023-12-19 21:00:09,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:00:09,890 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 66 transitions. [2023-12-19 21:00:09,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 21:00:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 66 transitions. [2023-12-19 21:00:09,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 21:00:09,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:00:09,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:00:09,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 21:00:10,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 21:00:10,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:00:10,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:00:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1998005184, now seen corresponding path program 1 times [2023-12-19 21:00:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:00:10,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278505640] [2023-12-19 21:00:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:10,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:00:10,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:00:10,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477156380] [2023-12-19 21:00:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:10,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:00:10,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:00:10,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:00:10,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 21:00:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 21:00:10,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 21:00:10,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 21:00:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-19 21:00:10,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 21:00:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 21:00:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278505640] [2023-12-19 21:00:10,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 21:00:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477156380] [2023-12-19 21:00:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477156380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 21:00:10,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 21:00:10,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 21:00:10,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940114415] [2023-12-19 21:00:10,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 21:00:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 21:00:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 21:00:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 21:00:10,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 21:00:10,221 INFO L87 Difference]: Start difference. First operand 46 states and 66 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 21:00:10,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 21:00:10,260 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2023-12-19 21:00:10,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 21:00:10,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-19 21:00:10,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 21:00:10,262 INFO L225 Difference]: With dead ends: 56 [2023-12-19 21:00:10,262 INFO L226 Difference]: Without dead ends: 48 [2023-12-19 21:00:10,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 21:00:10,263 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 21:00:10,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 21:00:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-19 21:00:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-19 21:00:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.40625) internal successors, (45), 33 states have internal predecessors, (45), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-19 21:00:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2023-12-19 21:00:10,275 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 28 [2023-12-19 21:00:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 21:00:10,275 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2023-12-19 21:00:10,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 21:00:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2023-12-19 21:00:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-19 21:00:10,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 21:00:10,276 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 21:00:10,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 21:00:10,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:00:10,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 21:00:10,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 21:00:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash -651823420, now seen corresponding path program 1 times [2023-12-19 21:00:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 21:00:10,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182320246] [2023-12-19 21:00:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 21:00:10,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 21:00:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176095189] [2023-12-19 21:00:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 21:00:10,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 21:00:10,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 21:00:10,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 21:00:10,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Received shutdown request... [2023-12-19 21:14:49,197 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 21:14:49,198 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 21:14:50,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-19 21:14:50,404 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2023-12-19 21:14:50,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2023-12-19 21:14:50,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-19 21:14:50,429 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 21:14:50,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 21:14:50,430 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 35 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-19 21:14:50,434 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-19 21:14:50,436 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 21:14:50,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 09:14:50 BoogieIcfgContainer [2023-12-19 21:14:50,438 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 21:14:50,438 INFO L158 Benchmark]: Toolchain (without parser) took 891118.06ms. Allocated memory is still 283.1MB. Free memory was 229.6MB in the beginning and 207.7MB in the end (delta: 21.9MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. [2023-12-19 21:14:50,439 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 190.8MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 21:14:50,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.94ms. Allocated memory is still 283.1MB. Free memory was 229.6MB in the beginning and 218.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-19 21:14:50,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.64ms. Allocated memory is still 283.1MB. Free memory was 218.1MB in the beginning and 216.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 21:14:50,440 INFO L158 Benchmark]: Boogie Preprocessor took 37.62ms. Allocated memory is still 283.1MB. Free memory was 216.9MB in the beginning and 214.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-19 21:14:50,440 INFO L158 Benchmark]: RCFGBuilder took 303.48ms. Allocated memory is still 283.1MB. Free memory was 214.9MB in the beginning and 201.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-19 21:14:50,440 INFO L158 Benchmark]: TraceAbstraction took 890489.74ms. Allocated memory is still 283.1MB. Free memory was 200.8MB in the beginning and 207.7MB in the end (delta: -6.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 21:14:50,442 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 190.8MB. Free memory is still 137.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.94ms. Allocated memory is still 283.1MB. Free memory was 229.6MB in the beginning and 218.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.64ms. Allocated memory is still 283.1MB. Free memory was 218.1MB in the beginning and 216.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.62ms. Allocated memory is still 283.1MB. Free memory was 216.9MB in the beginning and 214.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 303.48ms. Allocated memory is still 283.1MB. Free memory was 214.9MB in the beginning and 201.3MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 890489.74ms. Allocated memory is still 283.1MB. Free memory was 200.8MB in the beginning and 207.7MB in the end (delta: -6.9MB). There was no memory consumed. 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: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while NwaCegarLoop was analyzing trace of length 35 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 890.4s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 260 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 111 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 107 ConstructedInterpolants, 3 QuantifiedInterpolants, 266 SizeOfPredicates, 3 NumberOfNonLiveVariables, 281 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 93/96 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