/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-12.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:04:08,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:04:08,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:04:08,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:04:08,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:04:08,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:04:08,966 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:04:08,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:04:08,967 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:04:08,967 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:04:08,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:04:08,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:04:08,973 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:04:08,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:04:08,977 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:04:08,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:04:08,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:04:08,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:04:08,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:04:08,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:04:08,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:04:08,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:04:08,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:04:08,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:04:08,980 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:04:08,980 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:04:08,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:04:08,980 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:04:08,981 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:04:08,981 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:04:08,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:04:08,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:04:08,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:04:08,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:04:08,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:04:08,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:04:08,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:04:08,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:04:08,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:04:08,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:04:08,984 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:04:08,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:04:08,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:04:08,984 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:04:09,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:04:09,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:04:09,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:04:09,209 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:04:09,210 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:04:09,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-12.i [2023-12-20 22:04:10,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:04:10,492 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:04:10,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-12.i [2023-12-20 22:04:10,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f00e7b3eb/30e64875cb3f428691253b0b94426530/FLAGa871fa32b [2023-12-20 22:04:10,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f00e7b3eb/30e64875cb3f428691253b0b94426530 [2023-12-20 22:04:10,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:04:10,517 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:04:10,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:04:10,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:04:10,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:04:10,522 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,523 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7faa07bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10, skipping insertion in model container [2023-12-20 22:04:10,523 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:04:10,644 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_floatingpointinfluence_no-floats_file-12.i[916,929] [2023-12-20 22:04:10,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:04:10,686 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:04:10,695 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_floatingpointinfluence_no-floats_file-12.i[916,929] [2023-12-20 22:04:10,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:04:10,732 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:04:10,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10 WrapperNode [2023-12-20 22:04:10,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:04:10,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:04:10,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:04:10,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:04:10,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,767 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 104 [2023-12-20 22:04:10,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:04:10,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:04:10,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:04:10,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:04:10,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,804 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]. [2023-12-20 22:04:10,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,809 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,811 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,815 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:04:10,816 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:04:10,816 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:04:10,816 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:04:10,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (1/1) ... [2023-12-20 22:04:10,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:04:10,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:04:10,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 22:04:10,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 22:04:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:04:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:04:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:04:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:04:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:04:10,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:04:10,964 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:04:10,966 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:04:11,148 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:04:11,192 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:04:11,192 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:04:11,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:04:11 BoogieIcfgContainer [2023-12-20 22:04:11,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:04:11,194 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:04:11,194 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:04:11,198 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:04:11,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:04:10" (1/3) ... [2023-12-20 22:04:11,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c569fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:04:11, skipping insertion in model container [2023-12-20 22:04:11,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:10" (2/3) ... [2023-12-20 22:04:11,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c569fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:04:11, skipping insertion in model container [2023-12-20 22:04:11,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:04:11" (3/3) ... [2023-12-20 22:04:11,202 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-12.i [2023-12-20 22:04:11,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:04:11,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:04:11,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:04:11,253 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;@4fb2caaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:04:11,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:04:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-20 22:04:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 22:04:11,271 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:11,271 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:11,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:11,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:11,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1694065204, now seen corresponding path program 1 times [2023-12-20 22:04:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788526698] [2023-12-20 22:04:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:11,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:04:11,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788526698] [2023-12-20 22:04:11,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-20 22:04:11,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210375124] [2023-12-20 22:04:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:11,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:04:11,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:04:11,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:04:11,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:04:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:11,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-20 22:04:11,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:04:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-12-20 22:04:11,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 22:04:11,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210375124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:04:11,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:04:11,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 22:04:11,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437826744] [2023-12-20 22:04:11,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:04:11,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 22:04:11,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:04:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 22:04:11,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:04:11,627 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 22:04:11,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:04:11,665 INFO L93 Difference]: Finished difference Result 85 states and 148 transitions. [2023-12-20 22:04:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 22:04:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-12-20 22:04:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:04:11,676 INFO L225 Difference]: With dead ends: 85 [2023-12-20 22:04:11,676 INFO L226 Difference]: Without dead ends: 41 [2023-12-20 22:04:11,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:04:11,683 INFO L413 NwaCegarLoop]: 56 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, 56 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 [2023-12-20 22:04:11,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:04:11,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-20 22:04:11,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-20 22:04:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-20 22:04:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2023-12-20 22:04:11,711 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 59 transitions. Word has length 98 [2023-12-20 22:04:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:04:11,711 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 59 transitions. [2023-12-20 22:04:11,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 22:04:11,711 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2023-12-20 22:04:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 22:04:11,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:11,714 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:11,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 22:04:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-20 22:04:11,915 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:11,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash -695827916, now seen corresponding path program 1 times [2023-12-20 22:04:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653927051] [2023-12-20 22:04:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:11,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:11,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:04:11,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639193184] [2023-12-20 22:04:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:11,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:04:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:04:11,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:04:11,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 22:04:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:12,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 22:04:12,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:05:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-20 22:05:16,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:06:07,715 WARN L293 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 124 DAG size of output: 85 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:06:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:06:13,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:06:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653927051] [2023-12-20 22:06:13,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:06:13,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639193184] [2023-12-20 22:06:13,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639193184] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:06:13,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:06:13,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-12-20 22:06:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967181680] [2023-12-20 22:06:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:06:13,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 22:06:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:06:13,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 22:06:13,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-20 22:06:13,602 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:06:25,623 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2023-12-20 22:06:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 22:06:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-20 22:06:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:06:25,626 INFO L225 Difference]: With dead ends: 95 [2023-12-20 22:06:25,626 INFO L226 Difference]: Without dead ends: 93 [2023-12-20 22:06:25,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-12-20 22:06:25,627 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 83 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:06:25,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 247 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-20 22:06:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-20 22:06:25,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 69. [2023-12-20 22:06:25,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 22:06:25,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 97 transitions. [2023-12-20 22:06:25,649 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 97 transitions. Word has length 98 [2023-12-20 22:06:25,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:06:25,649 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 97 transitions. [2023-12-20 22:06:25,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 97 transitions. [2023-12-20 22:06:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 22:06:25,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:06:25,652 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:06:25,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 22:06:25,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-20 22:06:25,853 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:06:25,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:06:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1505174542, now seen corresponding path program 1 times [2023-12-20 22:06:25,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:06:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415216796] [2023-12-20 22:06:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:25,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:06:25,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:06:25,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185091997] [2023-12-20 22:06:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:25,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:06:25,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:06:25,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:06:25,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 22:06:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:25,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 22:06:25,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:06:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-20 22:06:53,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:07:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:07:44,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:07:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415216796] [2023-12-20 22:07:44,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:07:44,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185091997] [2023-12-20 22:07:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185091997] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:07:44,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:07:44,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-20 22:07:44,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494010843] [2023-12-20 22:07:44,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:07:44,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 22:07:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:07:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 22:07:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-20 22:07:44,480 INFO L87 Difference]: Start difference. First operand 69 states and 97 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:07:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:07:47,074 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2023-12-20 22:07:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 22:07:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-20 22:07:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:07:47,081 INFO L225 Difference]: With dead ends: 80 [2023-12-20 22:07:47,081 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 22:07:47,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-20 22:07:47,084 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 25 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 22:07:47,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 292 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 22:07:47,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 22:07:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2023-12-20 22:07:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-20 22:07:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2023-12-20 22:07:47,099 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 98 [2023-12-20 22:07:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:07:47,099 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2023-12-20 22:07:47,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:07:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2023-12-20 22:07:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 22:07:47,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:07:47,101 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:07:47,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 22:07:47,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:07:47,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:07:47,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:07:47,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1176034001, now seen corresponding path program 1 times [2023-12-20 22:07:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:07:47,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572635341] [2023-12-20 22:07:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:07:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:07:47,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:07:47,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754150934] [2023-12-20 22:07:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:07:47,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:07:47,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:07:47,326 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:07:47,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 22:07:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:07:47,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 22:07:47,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:08:39,065 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-20 22:08:39,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:09:21,653 WARN L293 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 125 DAG size of output: 116 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:09:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:09:35,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:09:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572635341] [2023-12-20 22:09:35,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:09:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754150934] [2023-12-20 22:09:35,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754150934] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:09:35,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:09:35,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-20 22:09:35,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800055205] [2023-12-20 22:09:35,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:09:35,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 22:09:35,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:09:35,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 22:09:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-20 22:09:35,559 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:09:47,639 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 125 DAG size of output: 121 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:09:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:09:53,436 INFO L93 Difference]: Finished difference Result 113 states and 150 transitions. [2023-12-20 22:09:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 22:09:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-20 22:09:53,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:09:53,439 INFO L225 Difference]: With dead ends: 113 [2023-12-20 22:09:53,439 INFO L226 Difference]: Without dead ends: 111 [2023-12-20 22:09:53,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-20 22:09:53,440 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 65 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 22:09:53,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 211 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 22:09:53,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-20 22:09:53,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 88. [2023-12-20 22:09:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.125) internal successors, (63), 58 states have internal predecessors, (63), 28 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2023-12-20 22:09:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 119 transitions. [2023-12-20 22:09:53,458 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 119 transitions. Word has length 99 [2023-12-20 22:09:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:09:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 119 transitions. [2023-12-20 22:09:53,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:09:53,459 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 119 transitions. [2023-12-20 22:09:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 22:09:53,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:09:53,460 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:09:53,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 22:09:53,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:09:53,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:09:53,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:09:53,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1233292303, now seen corresponding path program 1 times [2023-12-20 22:09:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:09:53,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470121863] [2023-12-20 22:09:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:09:53,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:09:53,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:09:53,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689688173] [2023-12-20 22:09:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:09:53,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:09:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:09:53,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:09:53,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 22:09:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:09:53,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 22:09:53,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:10:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-20 22:10:22,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:11:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:11:14,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:11:14,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470121863] [2023-12-20 22:11:14,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:11:14,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689688173] [2023-12-20 22:11:14,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689688173] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:11:14,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:11:14,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-12-20 22:11:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337191981] [2023-12-20 22:11:14,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:11:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 22:11:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:11:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 22:11:14,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-20 22:11:14,450 INFO L87 Difference]: Start difference. First operand 88 states and 119 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:11:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:11:26,431 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2023-12-20 22:11:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 22:11:26,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-20 22:11:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:11:26,433 INFO L225 Difference]: With dead ends: 109 [2023-12-20 22:11:26,433 INFO L226 Difference]: Without dead ends: 107 [2023-12-20 22:11:26,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-20 22:11:26,434 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 66 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 22:11:26,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 240 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 22:11:26,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-20 22:11:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2023-12-20 22:11:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 66 states have internal predecessors, (69), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 22:11:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 137 transitions. [2023-12-20 22:11:26,462 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 137 transitions. Word has length 99 [2023-12-20 22:11:26,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:11:26,462 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 137 transitions. [2023-12-20 22:11:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:11:26,463 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 137 transitions. [2023-12-20 22:11:26,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 22:11:26,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:11:26,464 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:11:26,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 22:11:26,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:11:26,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:11:26,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:11:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1856092371, now seen corresponding path program 1 times [2023-12-20 22:11:26,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:11:26,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739196420] [2023-12-20 22:11:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:11:26,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:11:26,687 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:11:26,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297416334] [2023-12-20 22:11:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:11:26,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:11:26,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:11:26,690 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:11:26,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 22:11:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:11:26,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 22:11:26,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:12:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-20 22:12:44,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 22:16:35,107 WARN L293 SmtUtils]: Spent 42.22s on a formula simplification. DAG size of input: 2949 DAG size of output: 1022 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:17:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:17:20,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:17:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739196420] [2023-12-20 22:17:20,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 22:17:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297416334] [2023-12-20 22:17:20,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297416334] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 22:17:20,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 22:17:20,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-12-20 22:17:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777604795] [2023-12-20 22:17:20,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:17:20,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 22:17:20,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:17:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 22:17:20,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-12-20 22:17:20,286 INFO L87 Difference]: Start difference. First operand 102 states and 137 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:17:47,764 WARN L293 SmtUtils]: Spent 20.36s on a formula simplification. DAG size of input: 1058 DAG size of output: 1039 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:17:57,410 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 1025 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:17:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:17:59,284 INFO L93 Difference]: Finished difference Result 110 states and 145 transitions. [2023-12-20 22:17:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 22:17:59,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-20 22:17:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:17:59,288 INFO L225 Difference]: With dead ends: 110 [2023-12-20 22:17:59,289 INFO L226 Difference]: Without dead ends: 108 [2023-12-20 22:17:59,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 79.8s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-12-20 22:17:59,294 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 33 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-20 22:17:59,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 330 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-20 22:17:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-20 22:17:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2023-12-20 22:17:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.0952380952380953) internal successors, (69), 66 states have internal predecessors, (69), 34 states have call successors, (34), 4 states have call predecessors, (34), 4 states have return successors, (34), 31 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-20 22:17:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 137 transitions. [2023-12-20 22:17:59,352 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 137 transitions. Word has length 99 [2023-12-20 22:17:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:17:59,357 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 137 transitions. [2023-12-20 22:17:59,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:17:59,357 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 137 transitions. [2023-12-20 22:17:59,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 22:17:59,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:17:59,358 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:17:59,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 22:17:59,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:17:59,559 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:17:59,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:17:59,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1913350673, now seen corresponding path program 1 times [2023-12-20 22:17:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:17:59,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197037143] [2023-12-20 22:17:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:17:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:17:59,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-20 22:17:59,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813293493] [2023-12-20 22:17:59,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:17:59,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:17:59,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:17:59,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 22:17:59,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 22:17:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:17:59,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 22:17:59,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 22:18:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-12-20 22:18:12,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-20 22:18:42,543 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 22:18:42,543 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 22:18:42,585 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 22:18:42,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 22:18:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:18:42,786 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 100 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while QuantifierPusher was running 1 iterations on subformula. [2023-12-20 22:18:42,791 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:18:42,793 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 22:18:42,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 10:18:42 BoogieIcfgContainer [2023-12-20 22:18:42,794 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 22:18:42,795 INFO L158 Benchmark]: Toolchain (without parser) took 872277.86ms. Allocated memory was 294.6MB in the beginning and 731.9MB in the end (delta: 437.3MB). Free memory was 244.6MB in the beginning and 399.1MB in the end (delta: -154.5MB). Peak memory consumption was 442.8MB. Max. memory is 8.0GB. [2023-12-20 22:18:42,795 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 22:18:42,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.74ms. Allocated memory is still 294.6MB. Free memory was 244.3MB in the beginning and 230.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-20 22:18:42,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.07ms. Allocated memory is still 294.6MB. Free memory was 230.7MB in the beginning and 227.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-20 22:18:42,795 INFO L158 Benchmark]: Boogie Preprocessor took 47.16ms. Allocated memory is still 294.6MB. Free memory was 227.5MB in the beginning and 222.0MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-20 22:18:42,796 INFO L158 Benchmark]: RCFGBuilder took 377.03ms. Allocated memory is still 294.6MB. Free memory was 222.0MB in the beginning and 202.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-20 22:18:42,796 INFO L158 Benchmark]: TraceAbstraction took 871600.05ms. Allocated memory was 294.6MB in the beginning and 731.9MB in the end (delta: 437.3MB). Free memory was 201.3MB in the beginning and 399.1MB in the end (delta: -197.8MB). Peak memory consumption was 398.7MB. Max. memory is 8.0GB. [2023-12-20 22:18:42,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 196.1MB. Free memory is still 144.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.74ms. Allocated memory is still 294.6MB. Free memory was 244.3MB in the beginning and 230.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.07ms. Allocated memory is still 294.6MB. Free memory was 230.7MB in the beginning and 227.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.16ms. Allocated memory is still 294.6MB. Free memory was 227.5MB in the beginning and 222.0MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 377.03ms. Allocated memory is still 294.6MB. Free memory was 222.0MB in the beginning and 202.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 871600.05ms. Allocated memory was 294.6MB in the beginning and 731.9MB in the end (delta: 437.3MB). Free memory was 201.3MB in the beginning and 399.1MB in the end (delta: -197.8MB). Peak memory consumption was 398.7MB. 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 100 with TraceHistMax 16,while TraceCheckSpWp was constructing backward predicates,while QuantifierPusher was running 1 iterations on subformula. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 871.6s, OverallIterations: 7, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 83.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 272 SdHoareTripleChecker+Valid, 16.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 272 mSDsluCounter, 1376 SdHoareTripleChecker+Invalid, 16.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 990 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 620 IncrementalHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 386 mSDtfsCounter, 620 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1099 GetRequests, 1008 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 138.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 63 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 742.5s InterpolantComputationTime, 689 NumberOfCodeBlocks, 689 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1073 ConstructedInterpolants, 5 QuantifiedInterpolants, 26870 SizeOfPredicates, 117 NumberOfNonLiveVariables, 1375 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 5115/5280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown