/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_fillercodesize_ps-cn-10_file-28.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:44:38,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:44:38,231 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:44:38,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:44:38,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:44:38,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:44:38,259 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:44:38,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:44:38,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:44:38,263 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:44:38,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:44:38,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:44:38,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:44:38,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:44:38,265 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:44:38,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:44:38,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:44:38,266 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:44:38,266 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:44:38,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:44:38,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:44:38,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:44:38,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:44:38,267 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:44:38,267 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:44:38,267 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:44:38,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:44:38,267 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:44:38,268 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:44:38,268 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:44:38,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:44:38,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:44:38,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:44:38,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:44:38,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:44:38,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:44:38,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:44:38,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:44:38,269 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:44:38,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:44:38,270 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:44:38,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:44:38,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:44:38,270 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:44:38,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:44:38,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:44:38,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:44:38,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:44:38,468 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:44:38,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.i [2023-12-15 19:44:39,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:44:39,602 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:44:39,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.i [2023-12-15 19:44:39,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba73710c/7c346986e6224cd6823db20fb38df135/FLAG246e4a6b5 [2023-12-15 19:44:39,617 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba73710c/7c346986e6224cd6823db20fb38df135 [2023-12-15 19:44:39,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:44:39,619 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:44:39,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:44:39,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:44:39,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:44:39,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d00bb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39, skipping insertion in model container [2023-12-15 19:44:39,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:44:39,749 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_fillercodesize_ps-cn-10_file-28.i[915,928] [2023-12-15 19:44:39,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:44:39,803 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:44:39,810 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_fillercodesize_ps-cn-10_file-28.i[915,928] [2023-12-15 19:44:39,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:44:39,845 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:44:39,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39 WrapperNode [2023-12-15 19:44:39,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:44:39,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:44:39,847 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:44:39,847 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:44:39,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,894 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 207 [2023-12-15 19:44:39,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:44:39,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:44:39,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:44:39,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:44:39,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,925 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:44:39,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,933 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:44:39,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:44:39,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:44:39,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:44:39,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (1/1) ... [2023-12-15 19:44:39,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:44:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:39,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:44:39,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:44:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:44:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 19:44:39,987 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 19:44:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:44:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:44:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:44:40,072 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:44:40,075 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:44:40,404 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:44:40,422 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:44:40,422 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:44:40,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:44:40 BoogieIcfgContainer [2023-12-15 19:44:40,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:44:40,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:44:40,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:44:40,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:44:40,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:44:39" (1/3) ... [2023-12-15 19:44:40,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64510b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:44:40, skipping insertion in model container [2023-12-15 19:44:40,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:44:39" (2/3) ... [2023-12-15 19:44:40,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64510b3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:44:40, skipping insertion in model container [2023-12-15 19:44:40,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:44:40" (3/3) ... [2023-12-15 19:44:40,429 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-28.i [2023-12-15 19:44:40,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:44:40,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:44:40,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:44:40,479 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;@793faf78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:44:40,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:44:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 50 states have (on average 1.4) internal successors, (70), 51 states have internal predecessors, (70), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-15 19:44:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:44:40,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:40,506 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:40,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:40,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash 284935457, now seen corresponding path program 1 times [2023-12-15 19:44:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:40,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796155232] [2023-12-15 19:44:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:40,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:40,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796155232] [2023-12-15 19:44:40,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 19:44:40,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3756924] [2023-12-15 19:44:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:40,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:40,678 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:40,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:44:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:40,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 19:44:40,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2023-12-15 19:44:40,860 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3756924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:40,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:40,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:44:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607399599] [2023-12-15 19:44:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:40,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:44:40,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:40,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:44:40,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:44:40,888 INFO L87 Difference]: Start difference. First operand has 82 states, 50 states have (on average 1.4) internal successors, (70), 51 states have internal predecessors, (70), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-15 19:44:40,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:40,918 INFO L93 Difference]: Finished difference Result 161 states and 283 transitions. [2023-12-15 19:44:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:44:40,919 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 183 [2023-12-15 19:44:40,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:40,924 INFO L225 Difference]: With dead ends: 161 [2023-12-15 19:44:40,924 INFO L226 Difference]: Without dead ends: 80 [2023-12-15 19:44:40,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:44:40,928 INFO L413 NwaCegarLoop]: 120 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, 120 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:40,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 120 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:44:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-15 19:44:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-15 19:44:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 49 states have internal predecessors, (65), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-15 19:44:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 123 transitions. [2023-12-15 19:44:40,958 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 123 transitions. Word has length 183 [2023-12-15 19:44:40,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:40,958 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 123 transitions. [2023-12-15 19:44:40,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2023-12-15 19:44:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 123 transitions. [2023-12-15 19:44:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:44:40,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:40,961 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:40,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 19:44:41,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-15 19:44:41,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:41,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash -522132649, now seen corresponding path program 1 times [2023-12-15 19:44:41,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:41,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294576996] [2023-12-15 19:44:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:41,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:41,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612275491] [2023-12-15 19:44:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:41,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:41,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:41,223 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:41,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:44:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:41,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 19:44:41,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:44:48,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:48,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294576996] [2023-12-15 19:44:48,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:44:48,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612275491] [2023-12-15 19:44:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612275491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:48,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:48,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 19:44:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659867496] [2023-12-15 19:44:48,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:48,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:44:48,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:48,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:44:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:44:48,335 INFO L87 Difference]: Start difference. First operand 80 states and 123 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:44:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:49,170 INFO L93 Difference]: Finished difference Result 254 states and 381 transitions. [2023-12-15 19:44:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 19:44:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 183 [2023-12-15 19:44:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:49,173 INFO L225 Difference]: With dead ends: 254 [2023-12-15 19:44:49,173 INFO L226 Difference]: Without dead ends: 175 [2023-12-15 19:44:49,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:44:49,174 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 216 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:49,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 582 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:44:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-15 19:44:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 131. [2023-12-15 19:44:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 91 states have (on average 1.3736263736263736) internal successors, (125), 92 states have internal predecessors, (125), 37 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2023-12-15 19:44:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 199 transitions. [2023-12-15 19:44:49,200 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 199 transitions. Word has length 183 [2023-12-15 19:44:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:49,202 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 199 transitions. [2023-12-15 19:44:49,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:44:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 199 transitions. [2023-12-15 19:44:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:44:49,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:49,205 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:49,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:44:49,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-15 19:44:49,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:49,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash 157925721, now seen corresponding path program 1 times [2023-12-15 19:44:49,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:49,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477464972] [2023-12-15 19:44:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:49,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:49,472 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:49,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054549398] [2023-12-15 19:44:49,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:49,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:49,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:49,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:49,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:44:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:49,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 19:44:49,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:44:49,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:49,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:49,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477464972] [2023-12-15 19:44:49,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:44:49,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054549398] [2023-12-15 19:44:49,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054549398] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:49,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:49,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:44:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358333060] [2023-12-15 19:44:49,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:49,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:44:49,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:49,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:44:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:44:49,737 INFO L87 Difference]: Start difference. First operand 131 states and 199 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:44:49,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:49,976 INFO L93 Difference]: Finished difference Result 497 states and 753 transitions. [2023-12-15 19:44:49,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:44:49,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 183 [2023-12-15 19:44:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:49,987 INFO L225 Difference]: With dead ends: 497 [2023-12-15 19:44:49,987 INFO L226 Difference]: Without dead ends: 367 [2023-12-15 19:44:49,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:44:49,992 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 290 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:49,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 460 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 19:44:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-12-15 19:44:50,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 300. [2023-12-15 19:44:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 190 states have (on average 1.3) internal successors, (247), 193 states have internal predecessors, (247), 103 states have call successors, (103), 6 states have call predecessors, (103), 6 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-15 19:44:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 453 transitions. [2023-12-15 19:44:50,055 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 453 transitions. Word has length 183 [2023-12-15 19:44:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:50,057 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 453 transitions. [2023-12-15 19:44:50,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:44:50,058 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 453 transitions. [2023-12-15 19:44:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:44:50,060 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:50,061 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:50,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:44:50,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:50,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:50,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1932933083, now seen corresponding path program 1 times [2023-12-15 19:44:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:50,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603012422] [2023-12-15 19:44:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:50,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:50,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365597251] [2023-12-15 19:44:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:50,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:50,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:50,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:50,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:44:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:50,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 19:44:50,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:44:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:44:55,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:44:55,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:44:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603012422] [2023-12-15 19:44:55,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:44:55,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365597251] [2023-12-15 19:44:55,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365597251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:44:55,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:44:55,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-15 19:44:55,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570798053] [2023-12-15 19:44:55,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:44:55,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 19:44:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:44:55,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 19:44:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-15 19:44:55,302 INFO L87 Difference]: Start difference. First operand 300 states and 453 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:44:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:44:56,037 INFO L93 Difference]: Finished difference Result 678 states and 1005 transitions. [2023-12-15 19:44:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 19:44:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 183 [2023-12-15 19:44:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:44:56,039 INFO L225 Difference]: With dead ends: 678 [2023-12-15 19:44:56,040 INFO L226 Difference]: Without dead ends: 391 [2023-12-15 19:44:56,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-12-15 19:44:56,041 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 203 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:44:56,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 528 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:44:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-15 19:44:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 305. [2023-12-15 19:44:56,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 195 states have (on average 1.2974358974358975) internal successors, (253), 198 states have internal predecessors, (253), 103 states have call successors, (103), 6 states have call predecessors, (103), 6 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-15 19:44:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 459 transitions. [2023-12-15 19:44:56,060 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 459 transitions. Word has length 183 [2023-12-15 19:44:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:44:56,060 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 459 transitions. [2023-12-15 19:44:56,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:44:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 459 transitions. [2023-12-15 19:44:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:44:56,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:44:56,062 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:44:56,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:44:56,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:56,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:44:56,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:44:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1108938663, now seen corresponding path program 1 times [2023-12-15 19:44:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:44:56,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239126020] [2023-12-15 19:44:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:56,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:44:56,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:44:56,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33120030] [2023-12-15 19:44:56,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:44:56,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:44:56,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:44:56,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:44:56,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:44:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:44:56,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 19:44:56,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:45:01,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:45:01,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:45:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239126020] [2023-12-15 19:45:01,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:45:01,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33120030] [2023-12-15 19:45:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33120030] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:45:01,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:45:01,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 19:45:01,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942336046] [2023-12-15 19:45:01,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:45:01,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:45:01,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:45:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:45:01,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:45:01,869 INFO L87 Difference]: Start difference. First operand 305 states and 459 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:45:02,809 INFO L93 Difference]: Finished difference Result 703 states and 1037 transitions. [2023-12-15 19:45:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 19:45:02,810 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 183 [2023-12-15 19:45:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:45:02,811 INFO L225 Difference]: With dead ends: 703 [2023-12-15 19:45:02,811 INFO L226 Difference]: Without dead ends: 411 [2023-12-15 19:45:02,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2023-12-15 19:45:02,813 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 205 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:45:02,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 589 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:45:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-12-15 19:45:02,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 331. [2023-12-15 19:45:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 224 states have internal predecessors, (291), 103 states have call successors, (103), 6 states have call predecessors, (103), 6 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-15 19:45:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 497 transitions. [2023-12-15 19:45:02,850 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 497 transitions. Word has length 183 [2023-12-15 19:45:02,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:45:02,851 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 497 transitions. [2023-12-15 19:45:02,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 497 transitions. [2023-12-15 19:45:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:45:02,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:45:02,853 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:02,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 19:45:03,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:03,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:45:03,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:45:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1346127069, now seen corresponding path program 1 times [2023-12-15 19:45:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:45:03,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400428945] [2023-12-15 19:45:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:03,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:45:03,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:45:03,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048999199] [2023-12-15 19:45:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:03,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:03,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:45:03,091 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:45:03,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:45:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:45:03,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-15 19:45:03,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 498 proven. 69 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2023-12-15 19:45:08,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:45:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:45:15,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:45:15,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400428945] [2023-12-15 19:45:15,573 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:45:15,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048999199] [2023-12-15 19:45:15,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048999199] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:45:15,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:45:15,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2023-12-15 19:45:15,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601489522] [2023-12-15 19:45:15,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:45:15,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 19:45:15,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:45:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 19:45:15,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-12-15 19:45:15,575 INFO L87 Difference]: Start difference. First operand 331 states and 497 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:45:17,375 INFO L93 Difference]: Finished difference Result 778 states and 1152 transitions. [2023-12-15 19:45:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 19:45:17,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 183 [2023-12-15 19:45:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:45:17,378 INFO L225 Difference]: With dead ends: 778 [2023-12-15 19:45:17,378 INFO L226 Difference]: Without dead ends: 460 [2023-12-15 19:45:17,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2023-12-15 19:45:17,379 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 313 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:45:17,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 756 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:45:17,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-12-15 19:45:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 331. [2023-12-15 19:45:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 221 states have (on average 1.3167420814479638) internal successors, (291), 224 states have internal predecessors, (291), 103 states have call successors, (103), 6 states have call predecessors, (103), 6 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2023-12-15 19:45:17,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 497 transitions. [2023-12-15 19:45:17,400 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 497 transitions. Word has length 183 [2023-12-15 19:45:17,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:45:17,400 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 497 transitions. [2023-12-15 19:45:17,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:17,400 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 497 transitions. [2023-12-15 19:45:17,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-12-15 19:45:17,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:45:17,401 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:17,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:45:17,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:17,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:45:17,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:45:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1801996327, now seen corresponding path program 1 times [2023-12-15 19:45:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:45:17,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327392981] [2023-12-15 19:45:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:45:17,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:45:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954774177] [2023-12-15 19:45:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:17,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:17,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:45:17,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:45:17,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:45:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:45:17,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 19:45:17,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:45:17,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:45:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:45:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327392981] [2023-12-15 19:45:17,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:45:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954774177] [2023-12-15 19:45:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954774177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:45:17,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:45:17,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:45:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577111433] [2023-12-15 19:45:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:45:17,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:45:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:45:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:45:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:45:17,924 INFO L87 Difference]: Start difference. First operand 331 states and 497 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:45:18,058 INFO L93 Difference]: Finished difference Result 985 states and 1467 transitions. [2023-12-15 19:45:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 19:45:18,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 183 [2023-12-15 19:45:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:45:18,062 INFO L225 Difference]: With dead ends: 985 [2023-12-15 19:45:18,062 INFO L226 Difference]: Without dead ends: 667 [2023-12-15 19:45:18,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:45:18,064 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 122 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:45:18,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 498 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:45:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-12-15 19:45:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 540. [2023-12-15 19:45:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 360 states have (on average 1.3027777777777778) internal successors, (469), 364 states have internal predecessors, (469), 169 states have call successors, (169), 10 states have call predecessors, (169), 10 states have return successors, (169), 165 states have call predecessors, (169), 169 states have call successors, (169) [2023-12-15 19:45:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 807 transitions. [2023-12-15 19:45:18,100 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 807 transitions. Word has length 183 [2023-12-15 19:45:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:45:18,100 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 807 transitions. [2023-12-15 19:45:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 807 transitions. [2023-12-15 19:45:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-15 19:45:18,102 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:45:18,102 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:18,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:45:18,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:18,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:45:18,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:45:18,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1743110128, now seen corresponding path program 1 times [2023-12-15 19:45:18,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:45:18,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873426025] [2023-12-15 19:45:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:18,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:45:18,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:45:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911906519] [2023-12-15 19:45:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:18,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:18,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:45:18,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:45:18,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:45:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:45:18,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 19:45:18,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:45:22,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:45:22,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:45:22,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873426025] [2023-12-15 19:45:22,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:45:22,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911906519] [2023-12-15 19:45:22,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911906519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:45:22,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:45:22,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 19:45:22,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9807271] [2023-12-15 19:45:22,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:45:22,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:45:22,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:45:22,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:45:22,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:45:22,748 INFO L87 Difference]: Start difference. First operand 540 states and 807 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:45:23,702 INFO L93 Difference]: Finished difference Result 934 states and 1370 transitions. [2023-12-15 19:45:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 19:45:23,703 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 184 [2023-12-15 19:45:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:45:23,706 INFO L225 Difference]: With dead ends: 934 [2023-12-15 19:45:23,706 INFO L226 Difference]: Without dead ends: 671 [2023-12-15 19:45:23,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2023-12-15 19:45:23,707 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 273 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:45:23,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 554 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 19:45:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2023-12-15 19:45:23,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 493. [2023-12-15 19:45:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 362 states have (on average 1.3232044198895028) internal successors, (479), 364 states have internal predecessors, (479), 120 states have call successors, (120), 10 states have call predecessors, (120), 10 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 19:45:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 719 transitions. [2023-12-15 19:45:23,734 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 719 transitions. Word has length 184 [2023-12-15 19:45:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:45:23,734 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 719 transitions. [2023-12-15 19:45:23,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 719 transitions. [2023-12-15 19:45:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-15 19:45:23,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:45:23,737 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:23,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 19:45:23,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-15 19:45:23,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:45:23,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:45:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1063051758, now seen corresponding path program 1 times [2023-12-15 19:45:23,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:45:23,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665483459] [2023-12-15 19:45:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:23,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:45:23,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:45:23,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772481264] [2023-12-15 19:45:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:45:23,970 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:45:23,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 19:45:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:45:24,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-15 19:45:24,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:45:27,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:45:27,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:45:27,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665483459] [2023-12-15 19:45:27,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:45:27,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772481264] [2023-12-15 19:45:27,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772481264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:45:27,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:45:27,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-15 19:45:27,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699893297] [2023-12-15 19:45:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:45:27,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 19:45:27,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:45:27,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 19:45:27,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:45:27,883 INFO L87 Difference]: Start difference. First operand 493 states and 719 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:45:28,950 INFO L93 Difference]: Finished difference Result 775 states and 1114 transitions. [2023-12-15 19:45:28,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 19:45:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 184 [2023-12-15 19:45:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:45:28,955 INFO L225 Difference]: With dead ends: 775 [2023-12-15 19:45:28,955 INFO L226 Difference]: Without dead ends: 617 [2023-12-15 19:45:28,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2023-12-15 19:45:28,957 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 249 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:45:28,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 641 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:45:28,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-12-15 19:45:28,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 493. [2023-12-15 19:45:28,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 362 states have (on average 1.3232044198895028) internal successors, (479), 364 states have internal predecessors, (479), 120 states have call successors, (120), 10 states have call predecessors, (120), 10 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 19:45:28,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 719 transitions. [2023-12-15 19:45:28,985 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 719 transitions. Word has length 184 [2023-12-15 19:45:28,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:45:28,985 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 719 transitions. [2023-12-15 19:45:28,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:28,985 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 719 transitions. [2023-12-15 19:45:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-15 19:45:28,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:45:28,988 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:28,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 19:45:29,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:29,195 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:45:29,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:45:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1965051154, now seen corresponding path program 1 times [2023-12-15 19:45:29,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:45:29,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955173458] [2023-12-15 19:45:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:29,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:45:29,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:45:29,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049114359] [2023-12-15 19:45:29,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:29,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:29,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:45:29,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:45:29,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 19:45:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:45:29,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 19:45:29,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:45:32,894 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:45:32,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:45:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955173458] [2023-12-15 19:45:32,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:45:32,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049114359] [2023-12-15 19:45:32,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049114359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:45:32,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:45:32,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-15 19:45:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28255337] [2023-12-15 19:45:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:45:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 19:45:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:45:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 19:45:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-15 19:45:32,897 INFO L87 Difference]: Start difference. First operand 493 states and 719 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:45:33,765 INFO L93 Difference]: Finished difference Result 923 states and 1329 transitions. [2023-12-15 19:45:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 19:45:33,766 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 184 [2023-12-15 19:45:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:45:33,768 INFO L225 Difference]: With dead ends: 923 [2023-12-15 19:45:33,768 INFO L226 Difference]: Without dead ends: 637 [2023-12-15 19:45:33,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2023-12-15 19:45:33,770 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 255 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:45:33,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 655 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 19:45:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-12-15 19:45:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 506. [2023-12-15 19:45:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 375 states have (on average 1.3226666666666667) internal successors, (496), 377 states have internal predecessors, (496), 120 states have call successors, (120), 10 states have call predecessors, (120), 10 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 19:45:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 736 transitions. [2023-12-15 19:45:33,797 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 736 transitions. Word has length 184 [2023-12-15 19:45:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:45:33,797 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 736 transitions. [2023-12-15 19:45:33,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 736 transitions. [2023-12-15 19:45:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-15 19:45:33,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:45:33,799 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:33,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 19:45:34,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 19:45:34,004 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:45:34,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:45:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1649857772, now seen corresponding path program 1 times [2023-12-15 19:45:34,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:45:34,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987120601] [2023-12-15 19:45:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:34,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:45:34,025 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:45:34,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320181499] [2023-12-15 19:45:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:34,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:34,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:45:34,026 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:45:34,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 19:45:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:45:34,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:45:34,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2023-12-15 19:45:34,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:45:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:45:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987120601] [2023-12-15 19:45:34,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 19:45:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320181499] [2023-12-15 19:45:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320181499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:45:34,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:45:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:45:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856437047] [2023-12-15 19:45:34,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:45:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:45:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:45:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:45:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:45:34,150 INFO L87 Difference]: Start difference. First operand 506 states and 736 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:45:34,289 INFO L93 Difference]: Finished difference Result 1456 states and 2125 transitions. [2023-12-15 19:45:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:45:34,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 184 [2023-12-15 19:45:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:45:34,294 INFO L225 Difference]: With dead ends: 1456 [2023-12-15 19:45:34,295 INFO L226 Difference]: Without dead ends: 1157 [2023-12-15 19:45:34,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:45:34,296 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 209 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:45:34,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 479 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 19:45:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-12-15 19:45:34,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 548. [2023-12-15 19:45:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 417 states have (on average 1.3213429256594724) internal successors, (551), 419 states have internal predecessors, (551), 120 states have call successors, (120), 10 states have call predecessors, (120), 10 states have return successors, (120), 118 states have call predecessors, (120), 120 states have call successors, (120) [2023-12-15 19:45:34,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 791 transitions. [2023-12-15 19:45:34,332 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 791 transitions. Word has length 184 [2023-12-15 19:45:34,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:45:34,332 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 791 transitions. [2023-12-15 19:45:34,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2023-12-15 19:45:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 791 transitions. [2023-12-15 19:45:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-15 19:45:34,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:45:34,334 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:34,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 19:45:34,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 19:45:34,540 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:45:34,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:45:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash 125149590, now seen corresponding path program 1 times [2023-12-15 19:45:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:45:34,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544587645] [2023-12-15 19:45:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:34,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:45:34,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 19:45:34,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912813214] [2023-12-15 19:45:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:45:34,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:45:34,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:45:34,565 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:45:34,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-15 19:45:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:45:34,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 19:45:34,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:45:39,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 1029 proven. 99 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-15 19:45:39,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 19:45:46,727 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:45:46,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-15 19:45:46,762 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:45:46,764 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:45:46,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-15 19:45:46,955 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 185 with TraceHistMax 29,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-4-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-9-4-2-2-2-2-2-2-2-1 context. [2023-12-15 19:45:46,958 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:45:46,960 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:45:46,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:45:46 BoogieIcfgContainer [2023-12-15 19:45:46,961 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:45:46,961 INFO L158 Benchmark]: Toolchain (without parser) took 67342.24ms. Allocated memory was 206.6MB in the beginning and 1.1GB in the end (delta: 873.5MB). Free memory was 157.9MB in the beginning and 968.6MB in the end (delta: -810.7MB). Peak memory consumption was 646.1MB. Max. memory is 8.0GB. [2023-12-15 19:45:46,963 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:45:46,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.10ms. Allocated memory is still 206.6MB. Free memory was 157.5MB in the beginning and 141.1MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-15 19:45:46,963 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.53ms. Allocated memory is still 206.6MB. Free memory was 141.1MB in the beginning and 134.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 19:45:46,964 INFO L158 Benchmark]: Boogie Preprocessor took 48.09ms. Allocated memory is still 206.6MB. Free memory was 134.8MB in the beginning and 123.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 19:45:46,964 INFO L158 Benchmark]: RCFGBuilder took 479.84ms. Allocated memory was 206.6MB in the beginning and 259.0MB in the end (delta: 52.4MB). Free memory was 123.7MB in the beginning and 213.7MB in the end (delta: -90.0MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. [2023-12-15 19:45:46,964 INFO L158 Benchmark]: TraceAbstraction took 66536.53ms. Allocated memory was 259.0MB in the beginning and 1.1GB in the end (delta: 821.0MB). Free memory was 212.6MB in the beginning and 968.6MB in the end (delta: -756.0MB). Peak memory consumption was 647.5MB. Max. memory is 8.0GB. [2023-12-15 19:45:46,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 206.6MB. Free memory is still 158.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.10ms. Allocated memory is still 206.6MB. Free memory was 157.5MB in the beginning and 141.1MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.53ms. Allocated memory is still 206.6MB. Free memory was 141.1MB in the beginning and 134.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.09ms. Allocated memory is still 206.6MB. Free memory was 134.8MB in the beginning and 123.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * RCFGBuilder took 479.84ms. Allocated memory was 206.6MB in the beginning and 259.0MB in the end (delta: 52.4MB). Free memory was 123.7MB in the beginning and 213.7MB in the end (delta: -90.0MB). Peak memory consumption was 22.7MB. Max. memory is 8.0GB. * TraceAbstraction took 66536.53ms. Allocated memory was 259.0MB in the beginning and 1.1GB in the end (delta: 821.0MB). Free memory was 212.6MB in the beginning and 968.6MB in the end (delta: -756.0MB). Peak memory consumption was 647.5MB. 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 185 with TraceHistMax 29,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-4-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-9-4-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.5s, OverallIterations: 12, TraceHistogramMax: 29, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2335 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2335 mSDsluCounter, 5862 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4354 mSDsCounter, 405 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2023 IncrementalHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 405 mSolverCounterUnsat, 1508 mSDtfsCounter, 2023 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2270 GetRequests, 2110 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=548occurred in iteration=11, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 1575 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 41.8s InterpolantComputationTime, 2200 NumberOfCodeBlocks, 2200 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2188 ConstructedInterpolants, 0 QuantifiedInterpolants, 20306 SizeOfPredicates, 161 NumberOfNonLiveVariables, 4843 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 19419/19488 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