/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 20:19:11,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 20:19:11,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 20:19:11,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 20:19:11,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 20:19:11,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 20:19:11,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 20:19:11,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 20:19:11,908 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 20:19:11,909 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 20:19:11,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 20:19:11,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 20:19:11,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 20:19:11,910 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 20:19:11,910 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 20:19:11,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 20:19:11,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 20:19:11,911 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 20:19:11,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 20:19:11,911 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 20:19:11,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 20:19:11,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 20:19:11,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 20:19:11,912 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 20:19:11,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 20:19:11,913 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 20:19:11,913 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 20:19:11,913 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 20:19:11,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 20:19:11,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 20:19:11,914 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 20:19:11,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 20:19:11,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:19:11,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 20:19:11,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 20:19:11,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 20:19:11,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 20:19:11,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 20:19:11,915 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 20:19:11,915 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 20:19:11,916 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 20:19:11,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 20:19:11,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 20:19:11,916 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 20:19:12,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 20:19:12,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 20:19:12,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 20:19:12,081 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 20:19:12,081 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 20:19:12,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2023-12-15 20:19:13,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 20:19:13,237 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 20:19:13,237 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2023-12-15 20:19:13,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc8e9427/2572a4d3321f40bfb13b0f8711077711/FLAGf77eb4388 [2023-12-15 20:19:13,264 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/acc8e9427/2572a4d3321f40bfb13b0f8711077711 [2023-12-15 20:19:13,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 20:19:13,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 20:19:13,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 20:19:13,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 20:19:13,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 20:19:13,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b73339c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13, skipping insertion in model container [2023-12-15 20:19:13,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 20:19:13,407 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i[919,932] [2023-12-15 20:19:13,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:19:13,467 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 20:19:13,475 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i[919,932] [2023-12-15 20:19:13,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 20:19:13,524 INFO L206 MainTranslator]: Completed translation [2023-12-15 20:19:13,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13 WrapperNode [2023-12-15 20:19:13,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 20:19:13,526 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 20:19:13,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 20:19:13,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 20:19:13,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,543 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,591 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 201 [2023-12-15 20:19:13,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 20:19:13,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 20:19:13,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 20:19:13,592 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 20:19:13,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,605 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,619 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 20:19:13,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,633 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 20:19:13,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 20:19:13,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 20:19:13,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 20:19:13,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (1/1) ... [2023-12-15 20:19:13,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 20:19:13,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:13,662 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) [2023-12-15 20:19:13,681 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 [2023-12-15 20:19:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 20:19:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 20:19:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 20:19:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 20:19:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 20:19:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 20:19:13,760 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 20:19:13,776 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 20:19:14,058 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 20:19:14,091 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 20:19:14,092 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 20:19:14,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:19:14 BoogieIcfgContainer [2023-12-15 20:19:14,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 20:19:14,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 20:19:14,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 20:19:14,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 20:19:14,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:19:13" (1/3) ... [2023-12-15 20:19:14,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11206ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:19:14, skipping insertion in model container [2023-12-15 20:19:14,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:19:13" (2/3) ... [2023-12-15 20:19:14,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11206ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:19:14, skipping insertion in model container [2023-12-15 20:19:14,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:19:14" (3/3) ... [2023-12-15 20:19:14,097 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-59.i [2023-12-15 20:19:14,108 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 20:19:14,108 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 20:19:14,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 20:19:14,175 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;@29888510, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 20:19:14,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 20:19:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 52 states have (on average 1.5961538461538463) internal successors, (83), 53 states have internal predecessors, (83), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 20:19:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 20:19:14,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:19:14,198 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:19:14,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:19:14,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:19:14,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1382796881, now seen corresponding path program 1 times [2023-12-15 20:19:14,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:19:14,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434854151] [2023-12-15 20:19:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:19:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:14,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:19:14,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434854151] [2023-12-15 20:19:14,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 20:19:14,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949042129] [2023-12-15 20:19:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:14,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:14,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:14,365 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) [2023-12-15 20:19:14,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 20:19:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:14,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 20:19:14,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:19:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-12-15 20:19:14,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:19:14,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949042129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:19:14,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:19:14,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 20:19:14,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999329680] [2023-12-15 20:19:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:19:14,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 20:19:14,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:19:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 20:19:14,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:19:14,589 INFO L87 Difference]: Start difference. First operand has 75 states, 52 states have (on average 1.5961538461538463) internal successors, (83), 53 states have internal predecessors, (83), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-15 20:19:14,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:19:14,629 INFO L93 Difference]: Finished difference Result 147 states and 264 transitions. [2023-12-15 20:19:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 20:19:14,631 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 134 [2023-12-15 20:19:14,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:19:14,637 INFO L225 Difference]: With dead ends: 147 [2023-12-15 20:19:14,637 INFO L226 Difference]: Without dead ends: 73 [2023-12-15 20:19:14,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 20:19:14,642 INFO L413 NwaCegarLoop]: 112 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, 112 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 [2023-12-15 20:19:14,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:19:14,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-15 20:19:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-15 20:19:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 51 states have internal predecessors, (75), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 20:19:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 115 transitions. [2023-12-15 20:19:14,679 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 115 transitions. Word has length 134 [2023-12-15 20:19:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:19:14,679 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 115 transitions. [2023-12-15 20:19:14,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-15 20:19:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 115 transitions. [2023-12-15 20:19:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 20:19:14,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:19:14,686 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:19:14,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 20:19:14,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 20:19:14,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:19:14,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:19:14,896 INFO L85 PathProgramCache]: Analyzing trace with hash 236260937, now seen corresponding path program 1 times [2023-12-15 20:19:14,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:19:14,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428143771] [2023-12-15 20:19:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:14,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:19:14,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:19:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123643556] [2023-12-15 20:19:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:14,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:14,972 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) [2023-12-15 20:19:15,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 20:19:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:15,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 20:19:15,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:19:15,226 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 217 proven. 48 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-15 20:19:15,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:19:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-15 20:19:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:19:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428143771] [2023-12-15 20:19:15,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:19:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123643556] [2023-12-15 20:19:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123643556] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:19:15,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:19:15,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-12-15 20:19:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661899995] [2023-12-15 20:19:15,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:19:15,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:19:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:19:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:19:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:19:15,382 INFO L87 Difference]: Start difference. First operand 73 states and 115 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-15 20:19:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:19:15,576 INFO L93 Difference]: Finished difference Result 150 states and 232 transitions. [2023-12-15 20:19:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 20:19:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 134 [2023-12-15 20:19:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:19:15,581 INFO L225 Difference]: With dead ends: 150 [2023-12-15 20:19:15,581 INFO L226 Difference]: Without dead ends: 78 [2023-12-15 20:19:15,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-12-15 20:19:15,587 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 95 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:19:15,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 169 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:19:15,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-15 20:19:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-12-15 20:19:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 20:19:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2023-12-15 20:19:15,609 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 112 transitions. Word has length 134 [2023-12-15 20:19:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:19:15,609 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 112 transitions. [2023-12-15 20:19:15,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-15 20:19:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 112 transitions. [2023-12-15 20:19:15,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-15 20:19:15,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:19:15,612 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:19:15,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 20:19:15,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 20:19:15,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:19:15,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:19:15,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1536474272, now seen corresponding path program 1 times [2023-12-15 20:19:15,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:19:15,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696999347] [2023-12-15 20:19:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:15,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:19:15,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:19:15,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684129739] [2023-12-15 20:19:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:15,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:15,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:15,850 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) [2023-12-15 20:19:15,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 20:19:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:15,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:19:15,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:19:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 217 proven. 48 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-12-15 20:19:16,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:19:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-15 20:19:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:19:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696999347] [2023-12-15 20:19:16,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:19:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684129739] [2023-12-15 20:19:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684129739] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:19:16,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:19:16,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-12-15 20:19:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731199243] [2023-12-15 20:19:16,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:19:16,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 20:19:16,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:19:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 20:19:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-15 20:19:16,340 INFO L87 Difference]: Start difference. First operand 76 states and 112 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-15 20:19:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:19:16,522 INFO L93 Difference]: Finished difference Result 153 states and 225 transitions. [2023-12-15 20:19:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 20:19:16,523 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 138 [2023-12-15 20:19:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:19:16,524 INFO L225 Difference]: With dead ends: 153 [2023-12-15 20:19:16,524 INFO L226 Difference]: Without dead ends: 78 [2023-12-15 20:19:16,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-12-15 20:19:16,525 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 59 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:19:16,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 269 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:19:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-15 20:19:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-12-15 20:19:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-15 20:19:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2023-12-15 20:19:16,531 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 138 [2023-12-15 20:19:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:19:16,532 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2023-12-15 20:19:16,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 3 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-12-15 20:19:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2023-12-15 20:19:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-15 20:19:16,533 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:19:16,533 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:19:16,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 20:19:16,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:16,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:19:16,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:19:16,739 INFO L85 PathProgramCache]: Analyzing trace with hash -966089622, now seen corresponding path program 1 times [2023-12-15 20:19:16,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:19:16,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047701041] [2023-12-15 20:19:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:16,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:19:16,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:19:16,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466980553] [2023-12-15 20:19:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:16,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:16,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:16,784 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) [2023-12-15 20:19:16,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 20:19:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:16,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 20:19:16,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:19:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 20:19:17,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:19:17,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:19:17,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047701041] [2023-12-15 20:19:17,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:19:17,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466980553] [2023-12-15 20:19:17,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466980553] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:19:17,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:19:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:19:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904211903] [2023-12-15 20:19:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:19:17,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 20:19:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:19:17,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 20:19:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 20:19:17,003 INFO L87 Difference]: Start difference. First operand 76 states and 111 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 20:19:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:19:17,073 INFO L93 Difference]: Finished difference Result 227 states and 332 transitions. [2023-12-15 20:19:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 20:19:17,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 139 [2023-12-15 20:19:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:19:17,075 INFO L225 Difference]: With dead ends: 227 [2023-12-15 20:19:17,075 INFO L226 Difference]: Without dead ends: 152 [2023-12-15 20:19:17,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 20:19:17,076 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 88 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:19:17,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 311 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:19:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-15 20:19:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 117. [2023-12-15 20:19:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-15 20:19:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2023-12-15 20:19:17,088 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 139 [2023-12-15 20:19:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:19:17,088 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2023-12-15 20:19:17,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 20:19:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2023-12-15 20:19:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-15 20:19:17,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:19:17,090 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:19:17,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 20:19:17,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:17,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:19:17,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:19:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1704477743, now seen corresponding path program 1 times [2023-12-15 20:19:17,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:19:17,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107131704] [2023-12-15 20:19:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:17,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:19:17,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:19:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321772314] [2023-12-15 20:19:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:17,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:17,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:17,333 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) [2023-12-15 20:19:17,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 20:19:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:17,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 20:19:17,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:19:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 20:19:17,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:19:17,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:19:17,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107131704] [2023-12-15 20:19:17,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:19:17,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321772314] [2023-12-15 20:19:17,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321772314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:19:17,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:19:17,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 20:19:17,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249959773] [2023-12-15 20:19:17,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:19:17,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 20:19:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:19:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 20:19:17,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 20:19:17,630 INFO L87 Difference]: Start difference. First operand 117 states and 170 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 20:19:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:19:17,752 INFO L93 Difference]: Finished difference Result 276 states and 401 transitions. [2023-12-15 20:19:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 20:19:17,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 140 [2023-12-15 20:19:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:19:17,753 INFO L225 Difference]: With dead ends: 276 [2023-12-15 20:19:17,753 INFO L226 Difference]: Without dead ends: 201 [2023-12-15 20:19:17,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-15 20:19:17,754 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 153 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 20:19:17,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 355 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 20:19:17,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-15 20:19:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 190. [2023-12-15 20:19:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 123 states have internal predecessors, (157), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:19:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 277 transitions. [2023-12-15 20:19:17,770 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 277 transitions. Word has length 140 [2023-12-15 20:19:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:19:17,770 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 277 transitions. [2023-12-15 20:19:17,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 20:19:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 277 transitions. [2023-12-15 20:19:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 20:19:17,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:19:17,771 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:19:17,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 20:19:17,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:17,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:19:17,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:19:17,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1347486297, now seen corresponding path program 1 times [2023-12-15 20:19:17,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:19:17,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959293400] [2023-12-15 20:19:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:17,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:19:17,993 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:19:17,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209316779] [2023-12-15 20:19:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:17,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:17,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:17,995 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) [2023-12-15 20:19:18,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 20:19:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:18,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 20:19:18,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:19:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-15 20:19:18,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 20:19:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:19:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959293400] [2023-12-15 20:19:18,110 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:19:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209316779] [2023-12-15 20:19:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209316779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 20:19:18,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 20:19:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 20:19:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81758033] [2023-12-15 20:19:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 20:19:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 20:19:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:19:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 20:19:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:19:18,112 INFO L87 Difference]: Start difference. First operand 190 states and 277 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 20:19:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:19:18,162 INFO L93 Difference]: Finished difference Result 411 states and 597 transitions. [2023-12-15 20:19:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 20:19:18,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2023-12-15 20:19:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:19:18,165 INFO L225 Difference]: With dead ends: 411 [2023-12-15 20:19:18,165 INFO L226 Difference]: Without dead ends: 263 [2023-12-15 20:19:18,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 20:19:18,167 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 76 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 20:19:18,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 194 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 20:19:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-12-15 20:19:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 212. [2023-12-15 20:19:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 145 states have (on average 1.2551724137931035) internal successors, (182), 145 states have internal predecessors, (182), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:19:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 302 transitions. [2023-12-15 20:19:18,205 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 302 transitions. Word has length 141 [2023-12-15 20:19:18,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:19:18,205 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 302 transitions. [2023-12-15 20:19:18,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-15 20:19:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 302 transitions. [2023-12-15 20:19:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 20:19:18,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:19:18,206 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:19:18,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 20:19:18,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:18,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:19:18,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:19:18,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1290227995, now seen corresponding path program 1 times [2023-12-15 20:19:18,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:19:18,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864760736] [2023-12-15 20:19:18,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:18,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:19:18,440 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:19:18,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368038678] [2023-12-15 20:19:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:19:18,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:19:18,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:19:18,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:19:18,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 20:19:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:19:18,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 20:19:18,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:19:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 199 proven. 135 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2023-12-15 20:19:19,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:07,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:07,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864760736] [2023-12-15 20:20:07,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:07,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368038678] [2023-12-15 20:20:07,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368038678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 20:20:07,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 20:20:07,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-15 20:20:07,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049323373] [2023-12-15 20:20:07,974 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:07,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 20:20:07,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:07,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 20:20:07,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2023-12-15 20:20:07,975 INFO L87 Difference]: Start difference. First operand 212 states and 302 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-15 20:20:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:09,371 INFO L93 Difference]: Finished difference Result 408 states and 565 transitions. [2023-12-15 20:20:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 20:20:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2023-12-15 20:20:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:09,374 INFO L225 Difference]: With dead ends: 408 [2023-12-15 20:20:09,374 INFO L226 Difference]: Without dead ends: 238 [2023-12-15 20:20:09,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=335, Invalid=925, Unknown=0, NotChecked=0, Total=1260 [2023-12-15 20:20:09,376 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 106 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:09,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 515 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 20:20:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-15 20:20:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 228. [2023-12-15 20:20:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 157 states have (on average 1.2292993630573248) internal successors, (193), 157 states have internal predecessors, (193), 60 states have call successors, (60), 10 states have call predecessors, (60), 10 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:20:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 313 transitions. [2023-12-15 20:20:09,391 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 313 transitions. Word has length 141 [2023-12-15 20:20:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:09,391 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 313 transitions. [2023-12-15 20:20:09,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-15 20:20:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 313 transitions. [2023-12-15 20:20:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 20:20:09,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:09,392 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:09,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:09,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:09,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:09,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1359133097, now seen corresponding path program 1 times [2023-12-15 20:20:09,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:09,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895409210] [2023-12-15 20:20:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:09,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:09,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:09,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844749221] [2023-12-15 20:20:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:09,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:09,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:20:09,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 20:20:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:09,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 20:20:09,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 379 proven. 21 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2023-12-15 20:20:09,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 36 proven. 21 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-15 20:20:09,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 20:20:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895409210] [2023-12-15 20:20:09,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 20:20:09,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844749221] [2023-12-15 20:20:09,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844749221] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 20:20:09,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 20:20:09,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-12-15 20:20:09,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279127699] [2023-12-15 20:20:09,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 20:20:09,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 20:20:09,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 20:20:09,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 20:20:09,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-15 20:20:09,932 INFO L87 Difference]: Start difference. First operand 228 states and 313 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-15 20:20:10,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 20:20:10,220 INFO L93 Difference]: Finished difference Result 529 states and 721 transitions. [2023-12-15 20:20:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 20:20:10,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 141 [2023-12-15 20:20:10,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 20:20:10,224 INFO L225 Difference]: With dead ends: 529 [2023-12-15 20:20:10,224 INFO L226 Difference]: Without dead ends: 351 [2023-12-15 20:20:10,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 273 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-15 20:20:10,225 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 284 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 20:20:10,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 263 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 20:20:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-12-15 20:20:10,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 262. [2023-12-15 20:20:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 188 states have (on average 1.2446808510638299) internal successors, (234), 188 states have internal predecessors, (234), 60 states have call successors, (60), 13 states have call predecessors, (60), 13 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 20:20:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 354 transitions. [2023-12-15 20:20:10,255 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 354 transitions. Word has length 141 [2023-12-15 20:20:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 20:20:10,258 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 354 transitions. [2023-12-15 20:20:10,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-12-15 20:20:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 354 transitions. [2023-12-15 20:20:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-15 20:20:10,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 20:20:10,260 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:10,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 20:20:10,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 20:20:10,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 20:20:10,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 20:20:10,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1297093483, now seen corresponding path program 1 times [2023-12-15 20:20:10,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 20:20:10,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624907802] [2023-12-15 20:20:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:10,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 20:20:10,492 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 20:20:10,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958645803] [2023-12-15 20:20:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 20:20:10,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 20:20:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 20:20:10,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 20:20:10,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 20:20:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 20:20:10,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-15 20:20:10,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 20:20:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 247 proven. 195 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-15 20:20:12,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 20:20:24,677 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-15 20:20:31,151 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 20:20:31,186 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 [2023-12-15 20:20:32,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 20:20:32,387 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-15 20:20:32,395 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 20:20:32,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 20:20:32,396 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 142 with TraceHistMax 20,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-15 20:20:32,399 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 20:20:32,400 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 20:20:32,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 08:20:32 BoogieIcfgContainer [2023-12-15 20:20:32,402 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 20:20:32,402 INFO L158 Benchmark]: Toolchain (without parser) took 79135.87ms. Allocated memory was 208.7MB in the beginning and 340.8MB in the end (delta: 132.1MB). Free memory was 159.9MB in the beginning and 177.0MB in the end (delta: -17.1MB). Peak memory consumption was 116.1MB. Max. memory is 8.0GB. [2023-12-15 20:20:32,402 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 20:20:32,402 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.15ms. Allocated memory is still 208.7MB. Free memory was 159.9MB in the beginning and 144.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 20:20:32,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.03ms. Allocated memory is still 208.7MB. Free memory was 144.2MB in the beginning and 138.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-15 20:20:32,403 INFO L158 Benchmark]: Boogie Preprocessor took 47.51ms. Allocated memory is still 208.7MB. Free memory was 138.9MB in the beginning and 131.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-12-15 20:20:32,403 INFO L158 Benchmark]: RCFGBuilder took 451.80ms. Allocated memory is still 208.7MB. Free memory was 131.1MB in the beginning and 98.6MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2023-12-15 20:20:32,403 INFO L158 Benchmark]: TraceAbstraction took 78308.40ms. Allocated memory was 208.7MB in the beginning and 340.8MB in the end (delta: 132.1MB). Free memory was 98.1MB in the beginning and 177.0MB in the end (delta: -78.9MB). Peak memory consumption was 54.2MB. Max. memory is 8.0GB. [2023-12-15 20:20:32,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 164.6MB. Free memory is still 111.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.15ms. Allocated memory is still 208.7MB. Free memory was 159.9MB in the beginning and 144.2MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.03ms. Allocated memory is still 208.7MB. Free memory was 144.2MB in the beginning and 138.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.51ms. Allocated memory is still 208.7MB. Free memory was 138.9MB in the beginning and 131.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * RCFGBuilder took 451.80ms. Allocated memory is still 208.7MB. Free memory was 131.1MB in the beginning and 98.6MB in the end (delta: 32.5MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * TraceAbstraction took 78308.40ms. Allocated memory was 208.7MB in the beginning and 340.8MB in the end (delta: 132.1MB). Free memory was 98.1MB in the beginning and 177.0MB in the end (delta: -78.9MB). Peak memory consumption was 54.2MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 142 with TraceHistMax 20,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.3s, OverallIterations: 9, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 880 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 861 mSDsluCounter, 2188 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1485 mSDsCounter, 284 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1279 IncrementalHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 284 mSolverCounterUnsat, 703 mSDtfsCounter, 1279 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1660 GetRequests, 1574 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 20.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 200 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 50.6s InterpolantComputationTime, 1242 NumberOfCodeBlocks, 1242 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1510 ConstructedInterpolants, 0 QuantifiedInterpolants, 6910 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2817 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 7991/8360 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 [2023-12-15 20:20:32,409 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 137 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown