/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-54.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 08:14:28,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 08:14:28,520 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 08:14:28,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 08:14:28,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 08:14:28,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 08:14:28,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 08:14:28,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 08:14:28,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 08:14:28,556 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 08:14:28,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 08:14:28,557 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 08:14:28,557 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 08:14:28,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 08:14:28,559 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 08:14:28,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 08:14:28,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 08:14:28,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 08:14:28,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 08:14:28,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 08:14:28,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 08:14:28,560 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 08:14:28,560 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 08:14:28,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 08:14:28,561 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 08:14:28,561 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 08:14:28,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 08:14:28,561 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 08:14:28,562 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 08:14:28,562 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 08:14:28,563 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 08:14:28,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 08:14:28,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:14:28,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 08:14:28,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 08:14:28,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 08:14:28,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 08:14:28,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 08:14:28,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 08:14:28,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 08:14:28,565 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 08:14:28,565 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 08:14:28,565 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 08:14:28,565 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 08:14:28,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 08:14:28,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 08:14:28,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 08:14:28,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 08:14:28,769 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 08:14:28,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-54.i [2023-12-19 08:14:29,857 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 08:14:30,037 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 08:14:30,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-54.i [2023-12-19 08:14:30,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd5939df/5698d3b173a947d8821e870a4496c0a1/FLAG9e928105b [2023-12-19 08:14:30,054 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbd5939df/5698d3b173a947d8821e870a4496c0a1 [2023-12-19 08:14:30,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 08:14:30,057 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 08:14:30,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 08:14:30,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 08:14:30,062 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 08:14:30,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41681483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30, skipping insertion in model container [2023-12-19 08:14:30,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 08:14:30,269 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-54.i[919,932] [2023-12-19 08:14:30,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:14:30,332 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 08:14:30,341 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-54.i[919,932] [2023-12-19 08:14:30,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 08:14:30,419 INFO L206 MainTranslator]: Completed translation [2023-12-19 08:14:30,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30 WrapperNode [2023-12-19 08:14:30,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 08:14:30,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 08:14:30,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 08:14:30,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 08:14:30,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,486 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2023-12-19 08:14:30,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 08:14:30,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 08:14:30,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 08:14:30,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 08:14:30,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,505 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,532 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 08:14:30,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,532 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 08:14:30,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 08:14:30,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 08:14:30,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 08:14:30,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (1/1) ... [2023-12-19 08:14:30,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 08:14:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:14:30,638 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 08:14:30,663 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 08:14:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 08:14:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-19 08:14:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-19 08:14:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 08:14:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 08:14:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 08:14:30,766 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 08:14:30,768 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 08:14:31,178 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 08:14:31,227 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 08:14:31,227 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 08:14:31,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:14:31 BoogieIcfgContainer [2023-12-19 08:14:31,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 08:14:31,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 08:14:31,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 08:14:31,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 08:14:31,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 08:14:30" (1/3) ... [2023-12-19 08:14:31,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a432f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:14:31, skipping insertion in model container [2023-12-19 08:14:31,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 08:14:30" (2/3) ... [2023-12-19 08:14:31,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a432f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 08:14:31, skipping insertion in model container [2023-12-19 08:14:31,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 08:14:31" (3/3) ... [2023-12-19 08:14:31,233 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-54.i [2023-12-19 08:14:31,245 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 08:14:31,245 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 08:14:31,275 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 08:14:31,280 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;@3ae1973d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 08:14:31,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 08:14:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 49 states have (on average 1.530612244897959) internal successors, (75), 50 states have internal predecessors, (75), 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 08:14:31,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 08:14:31,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:14:31,294 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, 1] [2023-12-19 08:14:31,295 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:14:31,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:14:31,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1184854252, now seen corresponding path program 1 times [2023-12-19 08:14:31,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:14:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283303443] [2023-12-19 08:14:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:31,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:14:31,502 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:14:31,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853142314] [2023-12-19 08:14:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:31,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:14:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:14:31,521 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 08:14:31,524 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 08:14:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:14:31,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 08:14:31,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:14:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-19 08:14:31,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:14:31,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:14:31,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283303443] [2023-12-19 08:14:31,796 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:14:31,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853142314] [2023-12-19 08:14:31,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853142314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:14:31,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:14:31,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:14:31,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948017474] [2023-12-19 08:14:31,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:14:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 08:14:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:14:31,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 08:14:31,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:14:31,832 INFO L87 Difference]: Start difference. First operand has 77 states, 49 states have (on average 1.530612244897959) internal successors, (75), 50 states have internal predecessors, (75), 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 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-19 08:14:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:14:31,915 INFO L93 Difference]: Finished difference Result 170 states and 305 transitions. [2023-12-19 08:14:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 08:14:31,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 163 [2023-12-19 08:14:31,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:14:31,932 INFO L225 Difference]: With dead ends: 170 [2023-12-19 08:14:31,932 INFO L226 Difference]: Without dead ends: 94 [2023-12-19 08:14:31,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 08:14:31,940 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 22 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:14:31,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 213 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:14:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-19 08:14:31,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2023-12-19 08:14:31,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.459016393442623) internal successors, (89), 62 states have internal predecessors, (89), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 08:14:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 143 transitions. [2023-12-19 08:14:31,989 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 143 transitions. Word has length 163 [2023-12-19 08:14:31,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:14:31,992 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 143 transitions. [2023-12-19 08:14:31,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-19 08:14:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 143 transitions. [2023-12-19 08:14:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 08:14:31,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:14:31,998 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, 1] [2023-12-19 08:14:32,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 08:14:32,204 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 08:14:32,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:14:32,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:14:32,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1419428586, now seen corresponding path program 1 times [2023-12-19 08:14:32,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:14:32,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913538358] [2023-12-19 08:14:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:32,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:14:32,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:14:32,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357387356] [2023-12-19 08:14:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:32,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:14:32,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:14:32,296 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 08:14:32,297 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 08:14:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:14:32,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:14:32,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:14:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-19 08:14:32,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:14:32,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:14:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913538358] [2023-12-19 08:14:32,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:14:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357387356] [2023-12-19 08:14:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357387356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:14:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:14:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 08:14:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881074558] [2023-12-19 08:14:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:14:32,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:14:32,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:14:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:14:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:14:32,469 INFO L87 Difference]: Start difference. First operand 91 states and 143 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-19 08:14:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:14:32,555 INFO L93 Difference]: Finished difference Result 186 states and 295 transitions. [2023-12-19 08:14:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:14:32,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 163 [2023-12-19 08:14:32,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:14:32,563 INFO L225 Difference]: With dead ends: 186 [2023-12-19 08:14:32,563 INFO L226 Difference]: Without dead ends: 96 [2023-12-19 08:14:32,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:14:32,569 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 6 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 08:14:32,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 311 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 08:14:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-19 08:14:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2023-12-19 08:14:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 64 states have internal predecessors, (92), 27 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-19 08:14:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 146 transitions. [2023-12-19 08:14:32,590 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 146 transitions. Word has length 163 [2023-12-19 08:14:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:14:32,590 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 146 transitions. [2023-12-19 08:14:32,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-19 08:14:32,591 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 146 transitions. [2023-12-19 08:14:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 08:14:32,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:14:32,594 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, 1] [2023-12-19 08:14:32,614 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 08:14:32,800 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 08:14:32,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:14:32,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:14:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2066192084, now seen corresponding path program 1 times [2023-12-19 08:14:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:14:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532069375] [2023-12-19 08:14:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:32,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:14:32,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:14:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440365356] [2023-12-19 08:14:32,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:32,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:14:32,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:14:32,873 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 08:14:32,901 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 08:14:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:14:33,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 08:14:33,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:14:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 582 proven. 45 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2023-12-19 08:14:33,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:14:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 27 proven. 45 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-12-19 08:14:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:14:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532069375] [2023-12-19 08:14:33,353 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:14:33,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440365356] [2023-12-19 08:14:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440365356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 08:14:33,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 08:14:33,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-19 08:14:33,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147280651] [2023-12-19 08:14:33,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 08:14:33,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 08:14:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:14:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 08:14:33,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-19 08:14:33,357 INFO L87 Difference]: Start difference. First operand 93 states and 146 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-19 08:14:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:14:33,573 INFO L93 Difference]: Finished difference Result 209 states and 322 transitions. [2023-12-19 08:14:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 08:14:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 163 [2023-12-19 08:14:33,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:14:33,575 INFO L225 Difference]: With dead ends: 209 [2023-12-19 08:14:33,575 INFO L226 Difference]: Without dead ends: 117 [2023-12-19 08:14:33,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 318 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 08:14:33,576 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 51 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 08:14:33,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 248 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 08:14:33,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-19 08:14:33,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2023-12-19 08:14:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 73 states have (on average 1.36986301369863) internal successors, (100), 75 states have internal predecessors, (100), 36 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2023-12-19 08:14:33,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 172 transitions. [2023-12-19 08:14:33,601 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 172 transitions. Word has length 163 [2023-12-19 08:14:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:14:33,601 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 172 transitions. [2023-12-19 08:14:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2023-12-19 08:14:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 172 transitions. [2023-12-19 08:14:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-19 08:14:33,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:14:33,603 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, 1] [2023-12-19 08:14:33,610 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 08:14:33,809 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 08:14:33,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:14:33,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:14:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash -453767850, now seen corresponding path program 1 times [2023-12-19 08:14:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:14:33,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036116109] [2023-12-19 08:14:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:33,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:14:33,837 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:14:33,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939157502] [2023-12-19 08:14:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:33,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:14:33,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:14:33,839 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 08:14:33,865 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 08:14:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:14:33,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 08:14:33,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:14:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2023-12-19 08:14:34,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 08:14:34,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 08:14:34,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036116109] [2023-12-19 08:14:34,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-19 08:14:34,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939157502] [2023-12-19 08:14:34,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939157502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 08:14:34,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 08:14:34,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 08:14:34,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932366015] [2023-12-19 08:14:34,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 08:14:34,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 08:14:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 08:14:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 08:14:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 08:14:34,117 INFO L87 Difference]: Start difference. First operand 114 states and 172 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-19 08:14:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 08:14:34,199 INFO L93 Difference]: Finished difference Result 288 states and 436 transitions. [2023-12-19 08:14:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 08:14:34,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 163 [2023-12-19 08:14:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 08:14:34,201 INFO L225 Difference]: With dead ends: 288 [2023-12-19 08:14:34,201 INFO L226 Difference]: Without dead ends: 192 [2023-12-19 08:14:34,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 08:14:34,202 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 77 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 08:14:34,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 343 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 08:14:34,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-19 08:14:34,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 151. [2023-12-19 08:14:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 93 states have internal predecessors, (119), 52 states have call successors, (52), 6 states have call predecessors, (52), 6 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2023-12-19 08:14:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 223 transitions. [2023-12-19 08:14:34,216 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 223 transitions. Word has length 163 [2023-12-19 08:14:34,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 08:14:34,216 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 223 transitions. [2023-12-19 08:14:34,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (25), 1 states have call predecessors, (25), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2023-12-19 08:14:34,217 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 223 transitions. [2023-12-19 08:14:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-19 08:14:34,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 08:14:34,218 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, 1, 1] [2023-12-19 08:14:34,234 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 08:14:34,424 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 08:14:34,424 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 08:14:34,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 08:14:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash -87791668, now seen corresponding path program 1 times [2023-12-19 08:14:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 08:14:34,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168427533] [2023-12-19 08:14:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 08:14:34,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-19 08:14:34,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124145065] [2023-12-19 08:14:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 08:14:34,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 08:14:34,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 08:14:34,447 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 08:14:34,492 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 08:14:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 08:14:34,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-19 08:14:34,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 08:14:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 671 proven. 345 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-12-19 08:14:55,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 08:15:20,673 WARN L293 SmtUtils]: Spent 7.48s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:15:28,713 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:15:42,750 WARN L293 SmtUtils]: Spent 6.95s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:16:00,968 WARN L293 SmtUtils]: Spent 7.76s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:16:42,542 WARN L293 SmtUtils]: Spent 29.41s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:16:57,401 WARN L293 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:17:10,828 WARN L293 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:17:18,369 WARN L293 SmtUtils]: Spent 7.54s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:17:26,390 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:18:44,293 WARN L293 SmtUtils]: Spent 49.08s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:19:40,089 WARN L293 SmtUtils]: Spent 22.65s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:19:55,720 WARN L293 SmtUtils]: Spent 6.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:20:12,415 WARN L293 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:21:41,168 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:22:06,742 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:22:23,267 WARN L293 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:22:46,492 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:23:30,044 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:24:09,111 WARN L293 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:25:14,482 WARN L293 SmtUtils]: Spent 9.49s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:26:06,262 WARN L293 SmtUtils]: Spent 19.45s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:26:49,618 WARN L293 SmtUtils]: Spent 6.96s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-19 08:27:47,686 WARN L293 SmtUtils]: Spent 41.09s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 08:28:33,196 WARN L293 SmtUtils]: Spent 6.82s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-12-19 08:29:11,783 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:29:11,790 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 08:29:12,352 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 08:29:12,361 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 08:29:12,558 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 08:29:12,559 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 165 with TraceHistMax 25,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-9-2-1 context. [2023-12-19 08:29:12,563 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-19 08:29:12,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 08:29:12,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 08:29:12 BoogieIcfgContainer [2023-12-19 08:29:12,566 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 08:29:12,566 INFO L158 Benchmark]: Toolchain (without parser) took 882509.58ms. Allocated memory was 346.0MB in the beginning and 427.8MB in the end (delta: 81.8MB). Free memory was 293.3MB in the beginning and 224.7MB in the end (delta: 68.6MB). Peak memory consumption was 233.7MB. Max. memory is 8.0GB. [2023-12-19 08:29:12,567 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 216.0MB. Free memory was 163.2MB in the beginning and 163.1MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 08:29:12,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.95ms. Allocated memory is still 346.0MB. Free memory was 293.3MB in the beginning and 278.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-19 08:29:12,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.92ms. Allocated memory is still 346.0MB. Free memory was 278.1MB in the beginning and 275.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 08:29:12,567 INFO L158 Benchmark]: Boogie Preprocessor took 78.16ms. Allocated memory is still 346.0MB. Free memory was 275.0MB in the beginning and 271.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-19 08:29:12,567 INFO L158 Benchmark]: RCFGBuilder took 662.07ms. Allocated memory is still 346.0MB. Free memory was 271.3MB in the beginning and 306.1MB in the end (delta: -34.8MB). Peak memory consumption was 26.0MB. Max. memory is 8.0GB. [2023-12-19 08:29:12,568 INFO L158 Benchmark]: TraceAbstraction took 881336.98ms. Allocated memory was 346.0MB in the beginning and 427.8MB in the end (delta: 81.8MB). Free memory was 305.6MB in the beginning and 224.7MB in the end (delta: 80.8MB). Peak memory consumption was 245.5MB. Max. memory is 8.0GB. [2023-12-19 08:29:12,577 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 216.0MB. Free memory was 163.2MB in the beginning and 163.1MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 361.95ms. Allocated memory is still 346.0MB. Free memory was 293.3MB in the beginning and 278.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 65.92ms. Allocated memory is still 346.0MB. Free memory was 278.1MB in the beginning and 275.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 78.16ms. Allocated memory is still 346.0MB. Free memory was 275.0MB in the beginning and 271.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 662.07ms. Allocated memory is still 346.0MB. Free memory was 271.3MB in the beginning and 306.1MB in the end (delta: -34.8MB). Peak memory consumption was 26.0MB. Max. memory is 8.0GB. * TraceAbstraction took 881336.98ms. Allocated memory was 346.0MB in the beginning and 427.8MB in the end (delta: 81.8MB). Free memory was 305.6MB in the beginning and 224.7MB in the end (delta: 80.8MB). Peak memory consumption was 245.5MB. 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 165 with TraceHistMax 25,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-5-1 term,while PolyPacSimplificationTermWalker was simplifying 5 xjuncts wrt. a ∧-9-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 881.3s, OverallIterations: 5, TraceHistogramMax: 25, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 1115 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 672 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 321 IncrementalHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 443 mSDtfsCounter, 321 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 799 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=4, InterpolantAutomatonStates: 19, 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, 4 MinimizatonAttempts, 50 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 652 NumberOfCodeBlocks, 652 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 1716 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1559 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 5910/6000 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