/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_operatoramount_amount100_file-91.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 12:32:02,045 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 12:32:02,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 12:32:02,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 12:32:02,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 12:32:02,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 12:32:02,131 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 12:32:02,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 12:32:02,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 12:32:02,135 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 12:32:02,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 12:32:02,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 12:32:02,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 12:32:02,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 12:32:02,137 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 12:32:02,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 12:32:02,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 12:32:02,137 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 12:32:02,137 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 12:32:02,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 12:32:02,137 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 12:32:02,138 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 12:32:02,138 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 12:32:02,138 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 12:32:02,138 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 12:32:02,138 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 12:32:02,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 12:32:02,139 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 12:32:02,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 12:32:02,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 12:32:02,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 12:32:02,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 12:32:02,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:32:02,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 12:32:02,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 12:32:02,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 12:32:02,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 12:32:02,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 12:32:02,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 12:32:02,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 12:32:02,141 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 12:32:02,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 12:32:02,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 12:32:02,141 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 12:32:02,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 12:32:02,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 12:32:02,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 12:32:02,356 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 12:32:02,356 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 12:32:02,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-91.i [2023-12-19 12:32:03,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 12:32:03,438 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 12:32:03,438 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-91.i [2023-12-19 12:32:03,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614304a49/5452356e76514cd5b1494f654d3376e7/FLAG1b8dec2a7 [2023-12-19 12:32:03,456 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614304a49/5452356e76514cd5b1494f654d3376e7 [2023-12-19 12:32:03,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 12:32:03,459 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 12:32:03,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 12:32:03,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 12:32:03,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 12:32:03,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,464 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f059991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03, skipping insertion in model container [2023-12-19 12:32:03,464 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,492 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 12:32:03,599 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_operatoramount_amount100_file-91.i[916,929] [2023-12-19 12:32:03,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:32:03,688 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 12:32:03,696 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_operatoramount_amount100_file-91.i[916,929] [2023-12-19 12:32:03,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 12:32:03,743 INFO L206 MainTranslator]: Completed translation [2023-12-19 12:32:03,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03 WrapperNode [2023-12-19 12:32:03,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 12:32:03,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 12:32:03,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 12:32:03,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 12:32:03,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,800 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 186 [2023-12-19 12:32:03,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 12:32:03,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 12:32:03,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 12:32:03,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 12:32:03,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,812 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,827 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]. [2023-12-19 12:32:03,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,835 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,843 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,853 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 12:32:03,854 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 12:32:03,854 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 12:32:03,854 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 12:32:03,855 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (1/1) ... [2023-12-19 12:32:03,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 12:32:03,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:32:03,874 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 12:32:03,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 12:32:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 12:32:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 12:32:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 12:32:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 12:32:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 12:32:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 12:32:03,980 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 12:32:03,983 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 12:32:04,364 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 12:32:04,414 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 12:32:04,414 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 12:32:04,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:32:04 BoogieIcfgContainer [2023-12-19 12:32:04,415 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 12:32:04,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 12:32:04,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 12:32:04,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 12:32:04,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:32:03" (1/3) ... [2023-12-19 12:32:04,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f36850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:32:04, skipping insertion in model container [2023-12-19 12:32:04,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:32:03" (2/3) ... [2023-12-19 12:32:04,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f36850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:32:04, skipping insertion in model container [2023-12-19 12:32:04,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:32:04" (3/3) ... [2023-12-19 12:32:04,420 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-91.i [2023-12-19 12:32:04,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 12:32:04,431 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 12:32:04,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 12:32:04,463 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;@6d0210d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 12:32:04,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 12:32:04,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 47 states have (on average 1.446808510638298) internal successors, (68), 48 states have internal predecessors, (68), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 12:32:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 12:32:04,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:32:04,495 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:32:04,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:32:04,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:32:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1265559604, now seen corresponding path program 1 times [2023-12-19 12:32:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:32:04,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462287740] [2023-12-19 12:32:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:04,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:32:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:32:04,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:32:04,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462287740] [2023-12-19 12:32:04,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-19 12:32:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326228652] [2023-12-19 12:32:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:04,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:32:04,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:32:04,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:32:04,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 12:32:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:32:04,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-19 12:32:04,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:32:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2023-12-19 12:32:04,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 12:32:04,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326228652] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 12:32:04,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 12:32:04,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 12:32:04,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331696922] [2023-12-19 12:32:04,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 12:32:04,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 12:32:04,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:32:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 12:32:04,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:32:04,954 INFO L87 Difference]: Start difference. First operand has 75 states, 47 states have (on average 1.446808510638298) internal successors, (68), 48 states have internal predecessors, (68), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-19 12:32:04,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:32:04,995 INFO L93 Difference]: Finished difference Result 147 states and 259 transitions. [2023-12-19 12:32:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 12:32:04,997 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2023-12-19 12:32:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:32:05,003 INFO L225 Difference]: With dead ends: 147 [2023-12-19 12:32:05,003 INFO L226 Difference]: Without dead ends: 73 [2023-12-19 12:32:05,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 12:32:05,009 INFO L413 NwaCegarLoop]: 110 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, 110 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 [2023-12-19 12:32:05,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 12:32:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-19 12:32:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-19 12:32:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 46 states have internal predecessors, (63), 25 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-19 12:32:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 113 transitions. [2023-12-19 12:32:05,052 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 113 transitions. Word has length 161 [2023-12-19 12:32:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:32:05,053 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 113 transitions. [2023-12-19 12:32:05,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 2 states have call successors, (25) [2023-12-19 12:32:05,053 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 113 transitions. [2023-12-19 12:32:05,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 12:32:05,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:32:05,062 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:32:05,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 12:32:05,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-19 12:32:05,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:32:05,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:32:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash -982126838, now seen corresponding path program 1 times [2023-12-19 12:32:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:32:05,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976258518] [2023-12-19 12:32:05,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:05,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:32:05,307 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:32:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798189115] [2023-12-19 12:32:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:05,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:32:05,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:32:05,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:32:05,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 12:32:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:32:05,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 12:32:05,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:32:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 612 proven. 30 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-12-19 12:32:05,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:32:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-19 12:32:05,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:32:05,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976258518] [2023-12-19 12:32:05,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:32:05,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798189115] [2023-12-19 12:32:05,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798189115] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:32:05,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:32:05,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 12:32:05,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486128662] [2023-12-19 12:32:05,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:32:05,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 12:32:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:32:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 12:32:05,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 12:32:05,731 INFO L87 Difference]: Start difference. First operand 73 states and 113 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-19 12:32:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:32:06,004 INFO L93 Difference]: Finished difference Result 176 states and 269 transitions. [2023-12-19 12:32:06,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 12:32:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 161 [2023-12-19 12:32:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:32:06,006 INFO L225 Difference]: With dead ends: 176 [2023-12-19 12:32:06,006 INFO L226 Difference]: Without dead ends: 104 [2023-12-19 12:32:06,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-19 12:32:06,008 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 92 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 12:32:06,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 238 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 12:32:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-19 12:32:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2023-12-19 12:32:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 57 states have (on average 1.280701754385965) internal successors, (73), 58 states have internal predecessors, (73), 39 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-19 12:32:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 151 transitions. [2023-12-19 12:32:06,019 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 151 transitions. Word has length 161 [2023-12-19 12:32:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:32:06,020 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 151 transitions. [2023-12-19 12:32:06,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-12-19 12:32:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 151 transitions. [2023-12-19 12:32:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 12:32:06,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:32:06,021 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:32:06,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 12:32:06,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-19 12:32:06,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:32:06,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:32:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash -924868536, now seen corresponding path program 1 times [2023-12-19 12:32:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:32:06,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105517120] [2023-12-19 12:32:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:32:06,282 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:32:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813427591] [2023-12-19 12:32:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:06,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:32:06,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:32:06,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:32:06,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 12:32:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:32:06,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 12:32:06,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:32:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 684 proven. 9 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2023-12-19 12:32:06,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:32:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-19 12:32:06,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:32:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105517120] [2023-12-19 12:32:06,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:32:06,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813427591] [2023-12-19 12:32:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813427591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:32:06,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:32:06,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-12-19 12:32:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904200368] [2023-12-19 12:32:06,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:32:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-19 12:32:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:32:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-19 12:32:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-19 12:32:06,753 INFO L87 Difference]: Start difference. First operand 99 states and 151 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 12:32:07,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:32:07,151 INFO L93 Difference]: Finished difference Result 204 states and 298 transitions. [2023-12-19 12:32:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 12:32:07,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) Word has length 161 [2023-12-19 12:32:07,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:32:07,158 INFO L225 Difference]: With dead ends: 204 [2023-12-19 12:32:07,158 INFO L226 Difference]: Without dead ends: 128 [2023-12-19 12:32:07,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2023-12-19 12:32:07,164 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 202 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 12:32:07,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 290 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 12:32:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-19 12:32:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2023-12-19 12:32:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 72 states have internal predecessors, (86), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-19 12:32:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 178 transitions. [2023-12-19 12:32:07,208 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 178 transitions. Word has length 161 [2023-12-19 12:32:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:32:07,209 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 178 transitions. [2023-12-19 12:32:07,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (44), 3 states have call predecessors, (44), 5 states have return successors, (44), 4 states have call predecessors, (44), 4 states have call successors, (44) [2023-12-19 12:32:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 178 transitions. [2023-12-19 12:32:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 12:32:07,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:32:07,211 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:32:07,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 12:32:07,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:32:07,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:32:07,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:32:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash 433211295, now seen corresponding path program 1 times [2023-12-19 12:32:07,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:32:07,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940459883] [2023-12-19 12:32:07,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:07,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:32:07,442 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:32:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442768463] [2023-12-19 12:32:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:07,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:32:07,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:32:07,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 12:32:07,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 12:32:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:32:07,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-19 12:32:07,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:32:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 624 proven. 36 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-19 12:32:07,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:32:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-19 12:32:07,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:32:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940459883] [2023-12-19 12:32:07,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:32:07,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442768463] [2023-12-19 12:32:07,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442768463] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 12:32:07,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 12:32:07,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-19 12:32:07,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602287923] [2023-12-19 12:32:07,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 12:32:07,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 12:32:07,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 12:32:07,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 12:32:07,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-19 12:32:07,819 INFO L87 Difference]: Start difference. First operand 123 states and 178 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-19 12:32:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 12:32:08,460 INFO L93 Difference]: Finished difference Result 322 states and 449 transitions. [2023-12-19 12:32:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 12:32:08,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 162 [2023-12-19 12:32:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 12:32:08,464 INFO L225 Difference]: With dead ends: 322 [2023-12-19 12:32:08,464 INFO L226 Difference]: Without dead ends: 232 [2023-12-19 12:32:08,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 12:32:08,468 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 267 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 12:32:08,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 564 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 12:32:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-19 12:32:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 177. [2023-12-19 12:32:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 106 states have (on average 1.179245283018868) internal successors, (125), 108 states have internal predecessors, (125), 60 states have call successors, (60), 10 states have call predecessors, (60), 10 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-19 12:32:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 245 transitions. [2023-12-19 12:32:08,504 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 245 transitions. Word has length 162 [2023-12-19 12:32:08,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 12:32:08,505 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 245 transitions. [2023-12-19 12:32:08,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2023-12-19 12:32:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 245 transitions. [2023-12-19 12:32:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-19 12:32:08,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 12:32:08,507 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 12:32:08,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 12:32:08,712 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 [2023-12-19 12:32:08,712 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 12:32:08,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 12:32:08,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1134275873, now seen corresponding path program 1 times [2023-12-19 12:32:08,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 12:32:08,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724979461] [2023-12-19 12:32:08,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:08,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 12:32:08,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 12:32:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709163678] [2023-12-19 12:32:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 12:32:08,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 12:32:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 12:32:08,753 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) [2023-12-19 12:32:08,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 12:32:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 12:32:08,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 12:32:08,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 12:32:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 428 proven. 183 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-12-19 12:32:09,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 12:32:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 12:32:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724979461] [2023-12-19 12:32:13,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 12:32:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709163678] [2023-12-19 12:32:13,910 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-19 12:32:13,940 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 139 [2023-12-19 12:32:13,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 12:32:14,111 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 [2023-12-19 12:32:14,111 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:364) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2023-12-19 12:32:14,114 INFO L158 Benchmark]: Toolchain (without parser) took 10655.26ms. Allocated memory was 254.8MB in the beginning and 306.2MB in the end (delta: 51.4MB). Free memory was 208.4MB in the beginning and 165.0MB in the end (delta: 43.4MB). Peak memory consumption was 95.9MB. Max. memory is 8.0GB. [2023-12-19 12:32:14,114 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 211.8MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 12:32:14,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.92ms. Allocated memory is still 254.8MB. Free memory was 207.9MB in the beginning and 190.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-19 12:32:14,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.97ms. Allocated memory is still 254.8MB. Free memory was 190.0MB in the beginning and 182.7MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2023-12-19 12:32:14,115 INFO L158 Benchmark]: Boogie Preprocessor took 52.91ms. Allocated memory is still 254.8MB. Free memory was 182.7MB in the beginning and 165.4MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-19 12:32:14,115 INFO L158 Benchmark]: RCFGBuilder took 561.01ms. Allocated memory is still 254.8MB. Free memory was 165.4MB in the beginning and 128.2MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-12-19 12:32:14,115 INFO L158 Benchmark]: TraceAbstraction took 9697.61ms. Allocated memory was 254.8MB in the beginning and 306.2MB in the end (delta: 51.4MB). Free memory was 127.1MB in the beginning and 165.0MB in the end (delta: -37.8MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. [2023-12-19 12:32:14,116 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 211.8MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 283.92ms. Allocated memory is still 254.8MB. Free memory was 207.9MB in the beginning and 190.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.97ms. Allocated memory is still 254.8MB. Free memory was 190.0MB in the beginning and 182.7MB in the end (delta: 7.3MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.91ms. Allocated memory is still 254.8MB. Free memory was 182.7MB in the beginning and 165.4MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * RCFGBuilder took 561.01ms. Allocated memory is still 254.8MB. Free memory was 165.4MB in the beginning and 128.2MB in the end (delta: 37.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 9697.61ms. Allocated memory was 254.8MB in the beginning and 306.2MB in the end (delta: 51.4MB). Free memory was 127.1MB in the beginning and 165.0MB in the end (delta: -37.8MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...