/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/loops/heavy-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 03:59:36,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 03:59:36,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 03:59:36,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 03:59:36,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 03:59:36,912 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 03:59:36,913 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 03:59:36,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 03:59:36,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 03:59:36,914 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 03:59:36,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 03:59:36,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 03:59:36,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 03:59:36,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 03:59:36,915 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 03:59:36,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 03:59:36,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 03:59:36,916 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 03:59:36,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 03:59:36,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 03:59:36,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 03:59:36,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 03:59:36,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 03:59:36,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 03:59:36,924 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 03:59:36,924 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 03:59:36,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 03:59:36,925 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 03:59:36,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 03:59:36,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 03:59:36,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 03:59:36,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 03:59:36,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 03:59:36,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 03:59:36,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 03:59:36,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 03:59:36,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 03:59:36,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 03:59:36,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 03:59:36,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 03:59:36,927 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 03:59:36,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 03:59:36,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 03:59:36,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 03:59:37,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 03:59:37,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 03:59:37,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 03:59:37,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 03:59:37,158 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 03:59:37,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-1.c [2023-12-21 03:59:38,303 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 03:59:38,486 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 03:59:38,486 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-1.c [2023-12-21 03:59:38,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d29fd5f/c40349e80dfc49deb9ec3a51293c2ae2/FLAG637cb54f7 [2023-12-21 03:59:38,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56d29fd5f/c40349e80dfc49deb9ec3a51293c2ae2 [2023-12-21 03:59:38,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 03:59:38,513 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 03:59:38,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 03:59:38,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 03:59:38,519 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 03:59:38,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f4e7525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38, skipping insertion in model container [2023-12-21 03:59:38,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,537 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 03:59:38,668 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-1.c[600,613] [2023-12-21 03:59:38,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 03:59:38,707 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 03:59:38,719 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-1.c[600,613] [2023-12-21 03:59:38,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 03:59:38,762 INFO L206 MainTranslator]: Completed translation [2023-12-21 03:59:38,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38 WrapperNode [2023-12-21 03:59:38,764 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 03:59:38,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 03:59:38,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 03:59:38,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 03:59:38,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,799 INFO L138 Inliner]: procedures = 12, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2023-12-21 03:59:38,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 03:59:38,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 03:59:38,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 03:59:38,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 03:59:38,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,820 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]. [2023-12-21 03:59:38,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 03:59:38,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 03:59:38,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 03:59:38,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 03:59:38,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (1/1) ... [2023-12-21 03:59:38,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 03:59:38,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:59:38,855 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) [2023-12-21 03:59:38,865 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 [2023-12-21 03:59:38,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 03:59:38,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 03:59:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 03:59:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 03:59:38,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 03:59:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 03:59:38,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 03:59:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 03:59:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 03:59:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-12-21 03:59:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-12-21 03:59:38,953 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 03:59:38,955 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 03:59:39,061 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 03:59:39,087 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 03:59:39,088 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-21 03:59:39,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:59:39 BoogieIcfgContainer [2023-12-21 03:59:39,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 03:59:39,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 03:59:39,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 03:59:39,093 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 03:59:39,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:59:38" (1/3) ... [2023-12-21 03:59:39,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8a2269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:59:39, skipping insertion in model container [2023-12-21 03:59:39,094 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:59:38" (2/3) ... [2023-12-21 03:59:39,094 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8a2269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:59:39, skipping insertion in model container [2023-12-21 03:59:39,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:59:39" (3/3) ... [2023-12-21 03:59:39,095 INFO L112 eAbstractionObserver]: Analyzing ICFG heavy-1.c [2023-12-21 03:59:39,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 03:59:39,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 03:59:39,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 03:59:39,152 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;@60fcc955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 03:59:39,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 03:59:39,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-21 03:59:39,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:39,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-21 03:59:39,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:39,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2480728, now seen corresponding path program 1 times [2023-12-21 03:59:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:39,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000288901] [2023-12-21 03:59:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:39,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:59:39,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:39,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000288901] [2023-12-21 03:59:39,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000288901] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:59:39,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:59:39,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 03:59:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653741698] [2023-12-21 03:59:39,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:59:39,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 03:59:39,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:39,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 03:59:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 03:59:39,380 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 10 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:39,418 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2023-12-21 03:59:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 03:59:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-21 03:59:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:39,427 INFO L225 Difference]: With dead ends: 21 [2023-12-21 03:59:39,427 INFO L226 Difference]: Without dead ends: 9 [2023-12-21 03:59:39,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 03:59:39,432 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:39,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:59:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-21 03:59:39,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-21 03:59:39,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-12-21 03:59:39,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 4 [2023-12-21 03:59:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:39,459 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-12-21 03:59:39,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-12-21 03:59:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-21 03:59:39,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:39,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-21 03:59:39,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 03:59:39,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:39,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:39,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2451898, now seen corresponding path program 1 times [2023-12-21 03:59:39,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:39,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153673433] [2023-12-21 03:59:39,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:39,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:59:39,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:39,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153673433] [2023-12-21 03:59:39,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153673433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:59:39,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:59:39,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 03:59:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286307022] [2023-12-21 03:59:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:59:39,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 03:59:39,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:39,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 03:59:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:59:39,582 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:39,608 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2023-12-21 03:59:39,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 03:59:39,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-21 03:59:39,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:39,610 INFO L225 Difference]: With dead ends: 17 [2023-12-21 03:59:39,611 INFO L226 Difference]: Without dead ends: 14 [2023-12-21 03:59:39,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:59:39,612 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:39,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:59:39,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-21 03:59:39,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2023-12-21 03:59:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-21 03:59:39,616 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 4 [2023-12-21 03:59:39,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:39,616 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-21 03:59:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-21 03:59:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 03:59:39,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:39,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:59:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 03:59:39,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:39,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:39,618 INFO L85 PathProgramCache]: Analyzing trace with hash 63007168, now seen corresponding path program 1 times [2023-12-21 03:59:39,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:39,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039434346] [2023-12-21 03:59:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:59:39,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:39,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039434346] [2023-12-21 03:59:39,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039434346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:59:39,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:59:39,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 03:59:39,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024720008] [2023-12-21 03:59:39,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:59:39,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 03:59:39,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 03:59:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:59:39,696 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:39,711 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2023-12-21 03:59:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 03:59:39,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-21 03:59:39,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:39,714 INFO L225 Difference]: With dead ends: 21 [2023-12-21 03:59:39,714 INFO L226 Difference]: Without dead ends: 13 [2023-12-21 03:59:39,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:59:39,717 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:39,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:59:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-21 03:59:39,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2023-12-21 03:59:39,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-21 03:59:39,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2023-12-21 03:59:39,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:39,723 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-21 03:59:39,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-21 03:59:39,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 03:59:39,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:39,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:59:39,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 03:59:39,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:39,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2060823466, now seen corresponding path program 1 times [2023-12-21 03:59:39,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:39,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676582017] [2023-12-21 03:59:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:59:39,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:39,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676582017] [2023-12-21 03:59:39,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676582017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:59:39,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:59:39,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 03:59:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5971841] [2023-12-21 03:59:39,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:59:39,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 03:59:39,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 03:59:39,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:59:39,820 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:39,830 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-12-21 03:59:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 03:59:39,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-21 03:59:39,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:39,831 INFO L225 Difference]: With dead ends: 21 [2023-12-21 03:59:39,831 INFO L226 Difference]: Without dead ends: 12 [2023-12-21 03:59:39,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 03:59:39,832 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:39,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:59:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-21 03:59:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-21 03:59:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-21 03:59:39,835 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 10 [2023-12-21 03:59:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:39,836 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-21 03:59:39,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-21 03:59:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 03:59:39,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:39,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:59:39,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 03:59:39,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:39,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:39,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1471176693, now seen corresponding path program 1 times [2023-12-21 03:59:39,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:39,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720157374] [2023-12-21 03:59:39,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:39,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 03:59:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720157374] [2023-12-21 03:59:39,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720157374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:59:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928835939] [2023-12-21 03:59:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:39,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:39,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:59:39,938 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) [2023-12-21 03:59:39,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 03:59:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:40,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 03:59:40,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:59:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 03:59:40,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:59:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 03:59:40,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928835939] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:59:40,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:59:40,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-21 03:59:40,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604259813] [2023-12-21 03:59:40,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:59:40,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 03:59:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 03:59:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 03:59:40,104 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:40,262 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2023-12-21 03:59:40,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 03:59:40,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 03:59:40,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:40,263 INFO L225 Difference]: With dead ends: 38 [2023-12-21 03:59:40,263 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 03:59:40,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2023-12-21 03:59:40,265 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:40,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 03:59:40,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 03:59:40,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-21 03:59:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2023-12-21 03:59:40,272 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 11 [2023-12-21 03:59:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:40,272 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2023-12-21 03:59:40,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-12-21 03:59:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-21 03:59:40,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:40,273 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:59:40,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 03:59:40,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:40,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:40,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:40,496 INFO L85 PathProgramCache]: Analyzing trace with hash 485059904, now seen corresponding path program 2 times [2023-12-21 03:59:40,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:40,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401481747] [2023-12-21 03:59:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:40,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 03:59:40,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401481747] [2023-12-21 03:59:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401481747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:59:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229956408] [2023-12-21 03:59:40,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 03:59:40,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:40,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:59:40,765 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) [2023-12-21 03:59:40,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 03:59:40,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 03:59:40,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:59:40,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 03:59:40,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:59:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 03:59:40,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:59:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 49 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-21 03:59:41,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229956408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:59:41,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:59:41,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 8] total 15 [2023-12-21 03:59:41,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652950102] [2023-12-21 03:59:41,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:59:41,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 03:59:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:41,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 03:59:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-12-21 03:59:41,051 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:41,393 INFO L93 Difference]: Finished difference Result 93 states and 125 transitions. [2023-12-21 03:59:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 03:59:41,394 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-21 03:59:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:41,396 INFO L225 Difference]: With dead ends: 93 [2023-12-21 03:59:41,396 INFO L226 Difference]: Without dead ends: 59 [2023-12-21 03:59:41,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-12-21 03:59:41,397 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:41,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 43 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 03:59:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-12-21 03:59:41,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2023-12-21 03:59:41,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2023-12-21 03:59:41,418 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 27 [2023-12-21 03:59:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:41,419 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2023-12-21 03:59:41,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2023-12-21 03:59:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-21 03:59:41,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:41,420 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:59:41,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 03:59:41,626 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,SelfDestructingSolverStorable5 [2023-12-21 03:59:41,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:41,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2096689302, now seen corresponding path program 3 times [2023-12-21 03:59:41,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:41,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001115815] [2023-12-21 03:59:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:41,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:42,055 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 110 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-12-21 03:59:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001115815] [2023-12-21 03:59:42,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001115815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:59:42,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960452256] [2023-12-21 03:59:42,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 03:59:42,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:42,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:59:42,057 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) [2023-12-21 03:59:42,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 03:59:42,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 03:59:42,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:59:42,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 03:59:42,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:59:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-12-21 03:59:42,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:59:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-12-21 03:59:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960452256] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:59:42,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:59:42,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 13 [2023-12-21 03:59:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338341934] [2023-12-21 03:59:42,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:59:42,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 03:59:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:42,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 03:59:42,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-21 03:59:42,282 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:42,812 INFO L93 Difference]: Finished difference Result 229 states and 305 transitions. [2023-12-21 03:59:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 03:59:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-21 03:59:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:42,818 INFO L225 Difference]: With dead ends: 229 [2023-12-21 03:59:42,818 INFO L226 Difference]: Without dead ends: 177 [2023-12-21 03:59:42,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 03:59:42,821 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:42,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 59 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 03:59:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-21 03:59:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-12-21 03:59:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.1193181818181819) internal successors, (197), 176 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2023-12-21 03:59:42,876 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 37 [2023-12-21 03:59:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:42,876 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2023-12-21 03:59:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2023-12-21 03:59:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-21 03:59:42,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:42,886 INFO L195 NwaCegarLoop]: trace histogram [112, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1] [2023-12-21 03:59:42,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 03:59:43,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:43,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:43,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1735823674, now seen corresponding path program 4 times [2023-12-21 03:59:43,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:43,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399380129] [2023-12-21 03:59:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8454 backedges. 983 proven. 28 refuted. 0 times theorem prover too weak. 7443 trivial. 0 not checked. [2023-12-21 03:59:44,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:44,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399380129] [2023-12-21 03:59:44,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399380129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:59:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651446218] [2023-12-21 03:59:44,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 03:59:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:59:44,967 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) [2023-12-21 03:59:44,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 03:59:45,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 03:59:45,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:59:45,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 03:59:45,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:59:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8454 backedges. 5175 proven. 865 refuted. 0 times theorem prover too weak. 2414 trivial. 0 not checked. [2023-12-21 03:59:45,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:59:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8454 backedges. 5335 proven. 400 refuted. 0 times theorem prover too weak. 2719 trivial. 0 not checked. [2023-12-21 03:59:45,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651446218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:59:45,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:59:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 7] total 20 [2023-12-21 03:59:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855510393] [2023-12-21 03:59:45,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:59:45,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 03:59:45,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:45,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 03:59:45,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-12-21 03:59:45,673 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:49,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:49,236 INFO L93 Difference]: Finished difference Result 623 states and 750 transitions. [2023-12-21 03:59:49,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-21 03:59:49,240 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2023-12-21 03:59:49,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:49,242 INFO L225 Difference]: With dead ends: 623 [2023-12-21 03:59:49,242 INFO L226 Difference]: Without dead ends: 457 [2023-12-21 03:59:49,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1622, Invalid=9090, Unknown=0, NotChecked=0, Total=10712 [2023-12-21 03:59:49,248 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:49,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 89 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 03:59:49,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-21 03:59:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2023-12-21 03:59:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.0986842105263157) internal successors, (501), 456 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 501 transitions. [2023-12-21 03:59:49,333 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 501 transitions. Word has length 176 [2023-12-21 03:59:49,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:49,335 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 501 transitions. [2023-12-21 03:59:49,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 501 transitions. [2023-12-21 03:59:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-21 03:59:49,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:49,343 INFO L195 NwaCegarLoop]: trace histogram [320, 40, 40, 40, 4, 4, 4, 1, 1, 1, 1] [2023-12-21 03:59:49,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 03:59:49,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:49,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash -467061958, now seen corresponding path program 5 times [2023-12-21 03:59:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042147913] [2023-12-21 03:59:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:59:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 66362 backedges. 3206 proven. 36 refuted. 0 times theorem prover too weak. 63120 trivial. 0 not checked. [2023-12-21 03:59:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:59:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042147913] [2023-12-21 03:59:54,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042147913] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 03:59:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578555079] [2023-12-21 03:59:54,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 03:59:54,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:54,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 03:59:54,069 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) [2023-12-21 03:59:54,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 03:59:54,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-12-21 03:59:54,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 03:59:54,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 03:59:54,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 03:59:54,767 INFO L134 CoverageAnalysis]: Checked inductivity of 66362 backedges. 31332 proven. 36 refuted. 0 times theorem prover too weak. 34994 trivial. 0 not checked. [2023-12-21 03:59:54,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 03:59:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 66362 backedges. 31332 proven. 36 refuted. 0 times theorem prover too weak. 34994 trivial. 0 not checked. [2023-12-21 03:59:54,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578555079] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 03:59:54,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 03:59:54,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-12-21 03:59:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871913997] [2023-12-21 03:59:54,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 03:59:54,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 03:59:54,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:59:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 03:59:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2023-12-21 03:59:54,968 INFO L87 Difference]: Start difference. First operand 457 states and 501 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:56,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:59:56,634 INFO L93 Difference]: Finished difference Result 1302 states and 1789 transitions. [2023-12-21 03:59:56,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 03:59:56,635 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 456 [2023-12-21 03:59:56,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:59:56,638 INFO L225 Difference]: With dead ends: 1302 [2023-12-21 03:59:56,638 INFO L226 Difference]: Without dead ends: 857 [2023-12-21 03:59:56,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=306, Invalid=506, Unknown=0, NotChecked=0, Total=812 [2023-12-21 03:59:56,642 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 03:59:56,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 03:59:56,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-12-21 03:59:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 857. [2023-12-21 03:59:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 1.0525700934579438) internal successors, (901), 856 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 901 transitions. [2023-12-21 03:59:56,760 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 901 transitions. Word has length 456 [2023-12-21 03:59:56,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:59:56,760 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 901 transitions. [2023-12-21 03:59:56,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 21 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:59:56,760 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 901 transitions. [2023-12-21 03:59:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-12-21 03:59:56,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:59:56,778 INFO L195 NwaCegarLoop]: trace histogram [720, 40, 40, 40, 4, 4, 4, 1, 1, 1, 1] [2023-12-21 03:59:56,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 03:59:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:59:56,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:59:56,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:59:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1282836794, now seen corresponding path program 6 times [2023-12-21 03:59:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:59:56,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381059159] [2023-12-21 03:59:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:59:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:59:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:00:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 290162 backedges. 14126 proven. 171 refuted. 0 times theorem prover too weak. 275865 trivial. 0 not checked. [2023-12-21 04:00:08,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:00:08,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381059159] [2023-12-21 04:00:08,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381059159] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:00:08,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377106213] [2023-12-21 04:00:08,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:00:08,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:00:08,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:00:08,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 04:00:08,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-21 04:14:10,749 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 04:14:10,749 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 [2023-12-21 04:14:11,760 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 [2023-12-21 04:14:11,950 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-21 04:14:11,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-21 04:14:11,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 04:14:11,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 04:14:11,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-12-21 04:14:11,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60607686] [2023-12-21 04:14:11,969 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 04:14:11,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 04:14:11,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:14:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 04:14:11,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-12-21 04:14:11,971 INFO L87 Difference]: Start difference. First operand 857 states and 901 transitions. Second operand has 21 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:14:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 04:14:11,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-12-21 04:14:11,973 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:14:11,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:14:11,974 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 04:14:11,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 04:14:11,976 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (857states) and FLOYD_HOARE automaton (currently 2 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-21 04:14:11,979 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2023-12-21 04:14:11,981 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 04:14:11,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 04:14:11 BoogieIcfgContainer [2023-12-21 04:14:11,983 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 04:14:11,983 INFO L158 Benchmark]: Toolchain (without parser) took 873470.71ms. Allocated memory was 263.2MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 211.4MB in the beginning and 1.1GB in the end (delta: -865.3MB). Peak memory consumption was 447.2MB. Max. memory is 8.0GB. [2023-12-21 04:14:11,983 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 04:14:11,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.53ms. Allocated memory is still 263.2MB. Free memory was 211.1MB in the beginning and 166.7MB in the end (delta: 44.4MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2023-12-21 04:14:11,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.60ms. Allocated memory is still 263.2MB. Free memory was 166.7MB in the beginning and 165.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 04:14:11,984 INFO L158 Benchmark]: Boogie Preprocessor took 29.87ms. Allocated memory is still 263.2MB. Free memory was 165.2MB in the beginning and 163.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 04:14:11,984 INFO L158 Benchmark]: RCFGBuilder took 257.90ms. Allocated memory is still 263.2MB. Free memory was 163.1MB in the beginning and 151.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 04:14:11,985 INFO L158 Benchmark]: TraceAbstraction took 872892.97ms. Allocated memory was 263.2MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 150.6MB in the beginning and 1.1GB in the end (delta: -926.2MB). Peak memory consumption was 386.4MB. Max. memory is 8.0GB. [2023-12-21 04:14:11,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 200.3MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.53ms. Allocated memory is still 263.2MB. Free memory was 211.1MB in the beginning and 166.7MB in the end (delta: 44.4MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.60ms. Allocated memory is still 263.2MB. Free memory was 166.7MB in the beginning and 165.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.87ms. Allocated memory is still 263.2MB. Free memory was 165.2MB in the beginning and 163.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 257.90ms. Allocated memory is still 263.2MB. Free memory was 163.1MB in the beginning and 151.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 872892.97ms. Allocated memory was 263.2MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 150.6MB in the beginning and 1.1GB in the end (delta: -926.2MB). Peak memory consumption was 386.4MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (857states) and FLOYD_HOARE automaton (currently 2 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 872.8s, OverallIterations: 10, TraceHistogramMax: 720, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 339 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 259 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1025 IncrementalHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 80 mSDtfsCounter, 1025 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1615 GetRequests, 1386 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4306 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=857occurred in iteration=9, InterpolantAutomatonStates: 194, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 2295 NumberOfCodeBlocks, 1828 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2982 ConstructedInterpolants, 0 QuantifiedInterpolants, 3934 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1875 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 513997/515615 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