/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:09:39,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:09:39,632 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 21:09:39,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:09:39,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:09:39,648 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:09:39,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:09:39,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:09:39,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:09:39,649 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:09:39,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:09:39,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:09:39,650 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:09:39,651 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:09:39,651 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:09:39,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:09:39,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:09:39,652 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:09:39,652 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:09:39,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:09:39,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:09:39,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:09:39,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:09:39,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:09:39,665 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:09:39,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:09:39,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:09:39,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:09:39,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:09:39,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:09:39,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:09:39,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:09:39,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:09:39,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:09:39,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:09:39,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:09:39,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:09:39,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:09:39,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:09:39,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:09:39,668 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:09:39,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:09:39,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:09:39,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:09:39,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:09:39,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:09:39,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:09:39,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:09:39,905 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:09:39,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i [2023-12-15 21:09:40,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:09:41,126 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:09:41,127 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i [2023-12-15 21:09:41,133 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969d29f7d/b264324c8cce4acabc60174fa250f423/FLAG44205d0df [2023-12-15 21:09:41,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/969d29f7d/b264324c8cce4acabc60174fa250f423 [2023-12-15 21:09:41,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:09:41,536 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:09:41,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:09:41,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:09:41,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:09:41,540 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:41,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d32fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41, skipping insertion in model container [2023-12-15 21:09:41,540 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:41,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:09:41,665 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i[916,929] [2023-12-15 21:09:41,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:09:41,770 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:09:41,778 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-39.i[916,929] [2023-12-15 21:09:41,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:09:41,840 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:09:41,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41 WrapperNode [2023-12-15 21:09:41,840 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:09:41,841 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:09:41,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:09:41,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:09:41,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:41,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:41,926 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 354 [2023-12-15 21:09:41,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:09:41,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:09:41,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:09:41,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:09:41,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:41,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:41,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,009 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 21:09:42,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:09:42,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:09:42,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:09:42,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:09:42,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (1/1) ... [2023-12-15 21:09:42,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:09:42,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:42,062 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 21:09:42,082 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 21:09:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:09:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:09:42,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:09:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:09:42,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:09:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:09:42,187 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:09:42,188 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:09:42,702 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:09:42,734 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:09:42,734 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:09:42,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:09:42 BoogieIcfgContainer [2023-12-15 21:09:42,735 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:09:42,736 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:09:42,736 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:09:42,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:09:42,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:09:41" (1/3) ... [2023-12-15 21:09:42,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334d9afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:09:42, skipping insertion in model container [2023-12-15 21:09:42,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:09:41" (2/3) ... [2023-12-15 21:09:42,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334d9afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:09:42, skipping insertion in model container [2023-12-15 21:09:42,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:09:42" (3/3) ... [2023-12-15 21:09:42,739 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-39.i [2023-12-15 21:09:42,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:09:42,750 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:09:42,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:09:42,783 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;@571fa6bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:09:42,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:09:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 94 states have internal predecessors, (144), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 21:09:42,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-15 21:09:42,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:42,805 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:42,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:42,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:42,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1785539059, now seen corresponding path program 1 times [2023-12-15 21:09:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:42,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578088892] [2023-12-15 21:09:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:43,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:43,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578088892] [2023-12-15 21:09:43,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:09:43,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567809606] [2023-12-15 21:09:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:43,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:43,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:43,078 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 21:09:43,129 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 21:09:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:43,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:09:43,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-12-15 21:09:43,374 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:43,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567809606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:43,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:43,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:09:43,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243751736] [2023-12-15 21:09:43,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:09:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:43,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:09:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:09:43,413 INFO L87 Difference]: Start difference. First operand has 138 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 94 states have internal predecessors, (144), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 21:09:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:43,459 INFO L93 Difference]: Finished difference Result 273 states and 496 transitions. [2023-12-15 21:09:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:09:43,462 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 281 [2023-12-15 21:09:43,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:43,468 INFO L225 Difference]: With dead ends: 273 [2023-12-15 21:09:43,468 INFO L226 Difference]: Without dead ends: 136 [2023-12-15 21:09:43,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 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 21:09:43,473 INFO L413 NwaCegarLoop]: 220 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, 220 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 21:09:43,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:09:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-15 21:09:43,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-12-15 21:09:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 92 states have internal predecessors, (139), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-15 21:09:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 223 transitions. [2023-12-15 21:09:43,507 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 223 transitions. Word has length 281 [2023-12-15 21:09:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:43,508 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 223 transitions. [2023-12-15 21:09:43,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2023-12-15 21:09:43,508 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 223 transitions. [2023-12-15 21:09:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-15 21:09:43,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:43,513 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:43,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:43,719 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 21:09:43,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:43,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:43,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1256133947, now seen corresponding path program 1 times [2023-12-15 21:09:43,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:43,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270421441] [2023-12-15 21:09:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:43,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:43,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:43,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190564094] [2023-12-15 21:09:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:43,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:43,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:43,809 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 21:09:43,846 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 21:09:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:44,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:09:44,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-15 21:09:44,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:44,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270421441] [2023-12-15 21:09:44,134 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:44,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190564094] [2023-12-15 21:09:44,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190564094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:44,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:44,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:09:44,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971755041] [2023-12-15 21:09:44,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:44,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:09:44,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:44,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:09:44,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:09:44,137 INFO L87 Difference]: Start difference. First operand 136 states and 223 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:44,243 INFO L93 Difference]: Finished difference Result 370 states and 605 transitions. [2023-12-15 21:09:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:09:44,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 281 [2023-12-15 21:09:44,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:44,246 INFO L225 Difference]: With dead ends: 370 [2023-12-15 21:09:44,246 INFO L226 Difference]: Without dead ends: 235 [2023-12-15 21:09:44,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:09:44,248 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 136 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:44,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 486 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:09:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-15 21:09:44,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2023-12-15 21:09:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 162 states have (on average 1.5) internal successors, (243), 163 states have internal predecessors, (243), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-15 21:09:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 377 transitions. [2023-12-15 21:09:44,280 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 377 transitions. Word has length 281 [2023-12-15 21:09:44,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:44,280 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 377 transitions. [2023-12-15 21:09:44,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 377 transitions. [2023-12-15 21:09:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:44,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:44,284 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:44,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:44,506 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 21:09:44,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:44,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1313048824, now seen corresponding path program 1 times [2023-12-15 21:09:44,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:44,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813851660] [2023-12-15 21:09:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:44,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:44,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083577714] [2023-12-15 21:09:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:44,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:44,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:44,558 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 21:09:44,568 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 21:09:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:44,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:09:44,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-15 21:09:45,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:45,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813851660] [2023-12-15 21:09:45,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:45,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083577714] [2023-12-15 21:09:45,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083577714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:45,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:45,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:09:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111536355] [2023-12-15 21:09:45,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:45,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 21:09:45,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 21:09:45,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:09:45,133 INFO L87 Difference]: Start difference. First operand 232 states and 377 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:45,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:45,766 INFO L93 Difference]: Finished difference Result 1030 states and 1672 transitions. [2023-12-15 21:09:45,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:09:45,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-15 21:09:45,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:45,773 INFO L225 Difference]: With dead ends: 1030 [2023-12-15 21:09:45,774 INFO L226 Difference]: Without dead ends: 799 [2023-12-15 21:09:45,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:09:45,775 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 619 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:45,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 1605 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 21:09:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-12-15 21:09:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 692. [2023-12-15 21:09:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 465 states have (on average 1.4602150537634409) internal successors, (679), 469 states have internal predecessors, (679), 218 states have call successors, (218), 8 states have call predecessors, (218), 8 states have return successors, (218), 214 states have call predecessors, (218), 218 states have call successors, (218) [2023-12-15 21:09:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1115 transitions. [2023-12-15 21:09:45,861 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1115 transitions. Word has length 282 [2023-12-15 21:09:45,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:45,862 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1115 transitions. [2023-12-15 21:09:45,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:45,862 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1115 transitions. [2023-12-15 21:09:45,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:45,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:45,866 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:45,892 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 21:09:46,073 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 21:09:46,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:46,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1136551306, now seen corresponding path program 1 times [2023-12-15 21:09:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:46,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482733627] [2023-12-15 21:09:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:46,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:46,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304316388] [2023-12-15 21:09:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:46,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:46,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:46,146 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 21:09:46,171 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 21:09:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:46,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:09:46,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1653 proven. 45 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-12-15 21:09:46,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:09:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 78 proven. 45 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-15 21:09:46,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482733627] [2023-12-15 21:09:46,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:46,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304316388] [2023-12-15 21:09:46,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304316388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:09:46,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:09:46,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:09:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410334077] [2023-12-15 21:09:46,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:09:46,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:09:46,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:09:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:09:46,597 INFO L87 Difference]: Start difference. First operand 692 states and 1115 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-15 21:09:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:46,856 INFO L93 Difference]: Finished difference Result 976 states and 1570 transitions. [2023-12-15 21:09:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:09:46,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 282 [2023-12-15 21:09:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:46,870 INFO L225 Difference]: With dead ends: 976 [2023-12-15 21:09:46,870 INFO L226 Difference]: Without dead ends: 285 [2023-12-15 21:09:46,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 556 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:09:46,872 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 266 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:46,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 398 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:09:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-12-15 21:09:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 275. [2023-12-15 21:09:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 186 states have (on average 1.456989247311828) internal successors, (271), 186 states have internal predecessors, (271), 84 states have call successors, (84), 4 states have call predecessors, (84), 4 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:09:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 439 transitions. [2023-12-15 21:09:46,925 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 439 transitions. Word has length 282 [2023-12-15 21:09:46,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:46,927 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 439 transitions. [2023-12-15 21:09:46,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (57), 2 states have call predecessors, (57), 4 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2023-12-15 21:09:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 439 transitions. [2023-12-15 21:09:46,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:46,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:46,930 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:46,950 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 21:09:47,130 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 21:09:47,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:47,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:47,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1749997194, now seen corresponding path program 1 times [2023-12-15 21:09:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:47,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606609544] [2023-12-15 21:09:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:47,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:47,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:47,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261337496] [2023-12-15 21:09:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:47,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:47,166 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 21:09:47,183 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 21:09:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:47,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:09:47,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-15 21:09:47,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:47,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:47,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606609544] [2023-12-15 21:09:47,423 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:47,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261337496] [2023-12-15 21:09:47,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261337496] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:47,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:47,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 21:09:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043916295] [2023-12-15 21:09:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:09:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:09:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:09:47,425 INFO L87 Difference]: Start difference. First operand 275 states and 439 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:47,659 INFO L93 Difference]: Finished difference Result 875 states and 1418 transitions. [2023-12-15 21:09:47,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:09:47,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-15 21:09:47,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:47,662 INFO L225 Difference]: With dead ends: 875 [2023-12-15 21:09:47,662 INFO L226 Difference]: Without dead ends: 601 [2023-12-15 21:09:47,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:09:47,664 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 583 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:47,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 650 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:09:47,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-12-15 21:09:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 325. [2023-12-15 21:09:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 234 states have (on average 1.4786324786324787) internal successors, (346), 234 states have internal predecessors, (346), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:09:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 514 transitions. [2023-12-15 21:09:47,683 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 514 transitions. Word has length 282 [2023-12-15 21:09:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:47,684 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 514 transitions. [2023-12-15 21:09:47,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 514 transitions. [2023-12-15 21:09:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:47,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:47,686 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:47,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:09:47,893 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 21:09:47,893 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:47,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:47,894 INFO L85 PathProgramCache]: Analyzing trace with hash 300986804, now seen corresponding path program 1 times [2023-12-15 21:09:47,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:47,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394151950] [2023-12-15 21:09:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:47,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:47,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:47,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832530707] [2023-12-15 21:09:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:47,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:47,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:47,924 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 21:09:47,977 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 21:09:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:48,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:09:48,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-15 21:09:48,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:48,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394151950] [2023-12-15 21:09:48,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:48,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832530707] [2023-12-15 21:09:48,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832530707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:48,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:48,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:09:48,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862459358] [2023-12-15 21:09:48,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:48,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:09:48,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:48,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:09:48,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:09:48,178 INFO L87 Difference]: Start difference. First operand 325 states and 514 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:48,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:48,282 INFO L93 Difference]: Finished difference Result 605 states and 954 transitions. [2023-12-15 21:09:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:09:48,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-15 21:09:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:48,285 INFO L225 Difference]: With dead ends: 605 [2023-12-15 21:09:48,285 INFO L226 Difference]: Without dead ends: 281 [2023-12-15 21:09:48,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 280 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 21:09:48,287 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 273 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:48,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 251 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:09:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-15 21:09:48,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-12-15 21:09:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 190 states have (on average 1.4157894736842105) internal successors, (269), 190 states have internal predecessors, (269), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-15 21:09:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 437 transitions. [2023-12-15 21:09:48,303 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 437 transitions. Word has length 282 [2023-12-15 21:09:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:48,304 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 437 transitions. [2023-12-15 21:09:48,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 437 transitions. [2023-12-15 21:09:48,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:48,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:48,306 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:48,330 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 21:09:48,513 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 21:09:48,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:48,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1355630408, now seen corresponding path program 1 times [2023-12-15 21:09:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:48,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035640280] [2023-12-15 21:09:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:48,539 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:48,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120084574] [2023-12-15 21:09:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:48,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:48,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:48,558 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 21:09:48,559 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 21:09:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:48,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:09:48,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2023-12-15 21:09:49,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:09:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035640280] [2023-12-15 21:09:49,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120084574] [2023-12-15 21:09:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120084574] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:09:49,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:09:49,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:09:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008052510] [2023-12-15 21:09:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:09:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:09:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:09:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:09:49,067 INFO L87 Difference]: Start difference. First operand 281 states and 437 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:49,228 INFO L93 Difference]: Finished difference Result 971 states and 1506 transitions. [2023-12-15 21:09:49,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:09:49,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 282 [2023-12-15 21:09:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:49,231 INFO L225 Difference]: With dead ends: 971 [2023-12-15 21:09:49,231 INFO L226 Difference]: Without dead ends: 691 [2023-12-15 21:09:49,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:09:49,233 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 219 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:49,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 528 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:09:49,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-15 21:09:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 549. [2023-12-15 21:09:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 368 states have (on average 1.3967391304347827) internal successors, (514), 368 states have internal predecessors, (514), 168 states have call successors, (168), 12 states have call predecessors, (168), 12 states have return successors, (168), 168 states have call predecessors, (168), 168 states have call successors, (168) [2023-12-15 21:09:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 850 transitions. [2023-12-15 21:09:49,262 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 850 transitions. Word has length 282 [2023-12-15 21:09:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:49,263 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 850 transitions. [2023-12-15 21:09:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2023-12-15 21:09:49,263 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 850 transitions. [2023-12-15 21:09:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:49,265 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:49,265 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:49,288 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 21:09:49,488 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 21:09:49,489 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:49,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:49,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1097464970, now seen corresponding path program 1 times [2023-12-15 21:09:49,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:49,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127143300] [2023-12-15 21:09:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:49,516 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:49,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210629898] [2023-12-15 21:09:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:49,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:49,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:49,517 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 21:09:49,541 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 21:09:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:49,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:09:49,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 893 proven. 105 refuted. 0 times theorem prover too weak. 2446 trivial. 0 not checked. [2023-12-15 21:09:50,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:09:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 18 proven. 105 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-15 21:09:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127143300] [2023-12-15 21:09:51,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210629898] [2023-12-15 21:09:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210629898] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:09:51,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:09:51,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-15 21:09:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043344989] [2023-12-15 21:09:51,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:09:51,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 21:09:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:51,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 21:09:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-15 21:09:51,573 INFO L87 Difference]: Start difference. First operand 549 states and 850 transitions. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 21:09:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:53,110 INFO L93 Difference]: Finished difference Result 3333 states and 5116 transitions. [2023-12-15 21:09:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 21:09:53,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 282 [2023-12-15 21:09:53,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:53,120 INFO L225 Difference]: With dead ends: 3333 [2023-12-15 21:09:53,120 INFO L226 Difference]: Without dead ends: 2785 [2023-12-15 21:09:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2023-12-15 21:09:53,122 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 1208 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:53,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1694 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 21:09:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2023-12-15 21:09:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2703. [2023-12-15 21:09:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 1918 states have (on average 1.427528675703858) internal successors, (2738), 1926 states have internal predecessors, (2738), 720 states have call successors, (720), 64 states have call predecessors, (720), 64 states have return successors, (720), 712 states have call predecessors, (720), 720 states have call successors, (720) [2023-12-15 21:09:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 4178 transitions. [2023-12-15 21:09:53,359 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 4178 transitions. Word has length 282 [2023-12-15 21:09:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:53,360 INFO L495 AbstractCegarLoop]: Abstraction has 2703 states and 4178 transitions. [2023-12-15 21:09:53,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 21:09:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 4178 transitions. [2023-12-15 21:09:53,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:53,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:53,362 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:53,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 21:09:53,568 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 21:09:53,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:53,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash -878610252, now seen corresponding path program 1 times [2023-12-15 21:09:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:53,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704252863] [2023-12-15 21:09:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:53,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:53,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370472923] [2023-12-15 21:09:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:53,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:53,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:53,622 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 21:09:53,646 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 21:09:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:53,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 21:09:53,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 893 proven. 105 refuted. 0 times theorem prover too weak. 2446 trivial. 0 not checked. [2023-12-15 21:09:54,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:09:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 18 proven. 105 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-15 21:09:54,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704252863] [2023-12-15 21:09:54,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:54,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370472923] [2023-12-15 21:09:54,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370472923] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:09:54,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:09:54,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-15 21:09:54,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264270436] [2023-12-15 21:09:54,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:09:54,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:09:54,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:54,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:09:54,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:09:54,266 INFO L87 Difference]: Start difference. First operand 2703 states and 4178 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-15 21:09:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:54,758 INFO L93 Difference]: Finished difference Result 5549 states and 8491 transitions. [2023-12-15 21:09:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:09:54,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) Word has length 282 [2023-12-15 21:09:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:54,770 INFO L225 Difference]: With dead ends: 5549 [2023-12-15 21:09:54,770 INFO L226 Difference]: Without dead ends: 2847 [2023-12-15 21:09:54,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-12-15 21:09:54,777 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 273 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:54,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 441 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:09:54,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-12-15 21:09:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2735. [2023-12-15 21:09:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 1942 states have (on average 1.411946446961895) internal successors, (2742), 1950 states have internal predecessors, (2742), 720 states have call successors, (720), 72 states have call predecessors, (720), 72 states have return successors, (720), 712 states have call predecessors, (720), 720 states have call successors, (720) [2023-12-15 21:09:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4182 transitions. [2023-12-15 21:09:54,987 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4182 transitions. Word has length 282 [2023-12-15 21:09:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:54,987 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4182 transitions. [2023-12-15 21:09:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 3 states have call successors, (77), 2 states have call predecessors, (77), 4 states have return successors, (78), 3 states have call predecessors, (78), 3 states have call successors, (78) [2023-12-15 21:09:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4182 transitions. [2023-12-15 21:09:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:54,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:54,990 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:55,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 21:09:55,216 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 21:09:55,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:55,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:55,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2044549746, now seen corresponding path program 1 times [2023-12-15 21:09:55,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:55,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288442812] [2023-12-15 21:09:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:55,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:55,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:55,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157922764] [2023-12-15 21:09:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:55,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:55,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:55,248 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 21:09:55,269 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 21:09:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:09:55,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:09:55,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:09:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1301 proven. 93 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2023-12-15 21:09:56,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:09:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 30 proven. 93 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-15 21:09:57,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:09:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288442812] [2023-12-15 21:09:57,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:09:57,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157922764] [2023-12-15 21:09:57,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157922764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:09:57,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:09:57,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2023-12-15 21:09:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593116511] [2023-12-15 21:09:57,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:09:57,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 21:09:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:09:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 21:09:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:09:57,174 INFO L87 Difference]: Start difference. First operand 2735 states and 4182 transitions. Second operand has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 21:09:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:09:59,061 INFO L93 Difference]: Finished difference Result 6352 states and 9630 transitions. [2023-12-15 21:09:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 21:09:59,062 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) Word has length 282 [2023-12-15 21:09:59,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:09:59,081 INFO L225 Difference]: With dead ends: 6352 [2023-12-15 21:09:59,081 INFO L226 Difference]: Without dead ends: 4984 [2023-12-15 21:09:59,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 21:09:59,087 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1189 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:09:59,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1894 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 21:09:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2023-12-15 21:09:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 3652. [2023-12-15 21:09:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2679 states have (on average 1.4270250093318402) internal successors, (3823), 2699 states have internal predecessors, (3823), 866 states have call successors, (866), 106 states have call predecessors, (866), 106 states have return successors, (866), 846 states have call predecessors, (866), 866 states have call successors, (866) [2023-12-15 21:09:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5555 transitions. [2023-12-15 21:09:59,458 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5555 transitions. Word has length 282 [2023-12-15 21:09:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:09:59,458 INFO L495 AbstractCegarLoop]: Abstraction has 3652 states and 5555 transitions. [2023-12-15 21:09:59,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.894736842105263) internal successors, (150), 19 states have internal predecessors, (150), 4 states have call successors, (84), 3 states have call predecessors, (84), 5 states have return successors, (84), 4 states have call predecessors, (84), 4 states have call successors, (84) [2023-12-15 21:09:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5555 transitions. [2023-12-15 21:09:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:09:59,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:09:59,461 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:09:59,480 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 21:09:59,667 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 21:09:59,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:09:59,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:09:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1827715724, now seen corresponding path program 1 times [2023-12-15 21:09:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:09:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86042141] [2023-12-15 21:09:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:09:59,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:09:59,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [126778600] [2023-12-15 21:09:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:09:59,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:09:59,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:09:59,724 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 21:09:59,749 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 21:10:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:00,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-15 21:10:00,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1807 proven. 600 refuted. 0 times theorem prover too weak. 1037 trivial. 0 not checked. [2023-12-15 21:10:03,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:10:05,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:05,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86042141] [2023-12-15 21:10:05,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:05,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126778600] [2023-12-15 21:10:05,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126778600] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:10:05,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:10:05,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-12-15 21:10:05,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147921691] [2023-12-15 21:10:05,586 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-15 21:10:05,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-15 21:10:05,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:05,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-15 21:10:05,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1158, Unknown=0, NotChecked=0, Total=1482 [2023-12-15 21:10:05,588 INFO L87 Difference]: Start difference. First operand 3652 states and 5555 transitions. Second operand has 27 states, 27 states have (on average 4.0) internal successors, (108), 25 states have internal predecessors, (108), 8 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (42), 7 states have call predecessors, (42), 8 states have call successors, (42) [2023-12-15 21:10:08,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:08,474 INFO L93 Difference]: Finished difference Result 11398 states and 16562 transitions. [2023-12-15 21:10:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-15 21:10:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.0) internal successors, (108), 25 states have internal predecessors, (108), 8 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (42), 7 states have call predecessors, (42), 8 states have call successors, (42) Word has length 282 [2023-12-15 21:10:08,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:08,499 INFO L225 Difference]: With dead ends: 11398 [2023-12-15 21:10:08,499 INFO L226 Difference]: Without dead ends: 7970 [2023-12-15 21:10:08,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1325, Invalid=4837, Unknown=0, NotChecked=0, Total=6162 [2023-12-15 21:10:08,509 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 837 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 1660 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:08,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1124 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1660 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 21:10:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7970 states. [2023-12-15 21:10:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7970 to 4694. [2023-12-15 21:10:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 3471 states have (on average 1.3607029674445406) internal successors, (4723), 3491 states have internal predecessors, (4723), 930 states have call successors, (930), 292 states have call predecessors, (930), 292 states have return successors, (930), 910 states have call predecessors, (930), 930 states have call successors, (930) [2023-12-15 21:10:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6583 transitions. [2023-12-15 21:10:09,060 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 6583 transitions. Word has length 282 [2023-12-15 21:10:09,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:09,061 INFO L495 AbstractCegarLoop]: Abstraction has 4694 states and 6583 transitions. [2023-12-15 21:10:09,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.0) internal successors, (108), 25 states have internal predecessors, (108), 8 states have call successors, (42), 8 states have call predecessors, (42), 12 states have return successors, (42), 7 states have call predecessors, (42), 8 states have call successors, (42) [2023-12-15 21:10:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 6583 transitions. [2023-12-15 21:10:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-15 21:10:09,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:09,063 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:09,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-15 21:10:09,270 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 21:10:09,270 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:09,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash -441512330, now seen corresponding path program 1 times [2023-12-15 21:10:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:09,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614789351] [2023-12-15 21:10:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:09,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:09,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:09,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138481191] [2023-12-15 21:10:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:09,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:09,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:09,301 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 21:10:09,304 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 21:10:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:10:09,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 21:10:09,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:10:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1808 proven. 453 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2023-12-15 21:10:11,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:10:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 72 proven. 171 refuted. 0 times theorem prover too weak. 3201 trivial. 0 not checked. [2023-12-15 21:10:12,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:10:12,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614789351] [2023-12-15 21:10:12,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:10:12,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138481191] [2023-12-15 21:10:12,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138481191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:10:12,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:10:12,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 31 [2023-12-15 21:10:12,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642817858] [2023-12-15 21:10:12,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:10:12,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 21:10:12,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:10:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 21:10:12,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2023-12-15 21:10:12,199 INFO L87 Difference]: Start difference. First operand 4694 states and 6583 transitions. Second operand has 31 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 8 states have call successors, (83), 6 states have call predecessors, (83), 11 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) [2023-12-15 21:10:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:10:15,848 INFO L93 Difference]: Finished difference Result 13488 states and 19256 transitions. [2023-12-15 21:10:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-15 21:10:15,849 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 8 states have call successors, (83), 6 states have call predecessors, (83), 11 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) Word has length 282 [2023-12-15 21:10:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:10:15,894 INFO L225 Difference]: With dead ends: 13488 [2023-12-15 21:10:15,894 INFO L226 Difference]: Without dead ends: 9126 [2023-12-15 21:10:15,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1813, Invalid=6197, Unknown=0, NotChecked=0, Total=8010 [2023-12-15 21:10:15,908 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1564 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 21:10:15,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 1631 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 21:10:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2023-12-15 21:10:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 4174. [2023-12-15 21:10:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4174 states, 3046 states have (on average 1.340774786605384) internal successors, (4084), 3054 states have internal predecessors, (4084), 858 states have call successors, (858), 269 states have call predecessors, (858), 269 states have return successors, (858), 850 states have call predecessors, (858), 858 states have call successors, (858) [2023-12-15 21:10:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 5800 transitions. [2023-12-15 21:10:16,487 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 5800 transitions. Word has length 282 [2023-12-15 21:10:16,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:10:16,487 INFO L495 AbstractCegarLoop]: Abstraction has 4174 states and 5800 transitions. [2023-12-15 21:10:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.233333333333333) internal successors, (157), 28 states have internal predecessors, (157), 8 states have call successors, (83), 6 states have call predecessors, (83), 11 states have return successors, (84), 8 states have call predecessors, (84), 8 states have call successors, (84) [2023-12-15 21:10:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 5800 transitions. [2023-12-15 21:10:16,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-15 21:10:16,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:10:16,490 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:16,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-15 21:10:16,696 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 21:10:16,696 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:10:16,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:10:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash 843849354, now seen corresponding path program 1 times [2023-12-15 21:10:16,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:10:16,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102854693] [2023-12-15 21:10:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:16,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:10:16,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:10:16,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033139569] [2023-12-15 21:10:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:10:16,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:10:16,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:10:16,721 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:10:16,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-15 21:10:47,710 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 21:10:47,728 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:10:48,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-15 21:10:48,929 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-15 21:10:48,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-15 21:10:48,936 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:10:48,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 21:10:48,937 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 284 with TraceHistMax 42,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-15 21:10:48,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-12-15 21:10:48,961 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:10:48,964 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:10:48,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:10:48 BoogieIcfgContainer [2023-12-15 21:10:48,967 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:10:48,967 INFO L158 Benchmark]: Toolchain (without parser) took 67431.30ms. Allocated memory was 162.5MB in the beginning and 777.0MB in the end (delta: 614.5MB). Free memory was 127.1MB in the beginning and 282.7MB in the end (delta: -155.6MB). Peak memory consumption was 460.4MB. Max. memory is 8.0GB. [2023-12-15 21:10:48,967 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 162.5MB. Free memory was 119.2MB in the beginning and 119.0MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:10:48,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.09ms. Allocated memory is still 162.5MB. Free memory was 126.7MB in the beginning and 102.4MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 21:10:48,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.07ms. Allocated memory is still 162.5MB. Free memory was 102.4MB in the beginning and 92.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 21:10:48,971 INFO L158 Benchmark]: Boogie Preprocessor took 106.00ms. Allocated memory is still 162.5MB. Free memory was 92.6MB in the beginning and 129.9MB in the end (delta: -37.3MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. [2023-12-15 21:10:48,971 INFO L158 Benchmark]: RCFGBuilder took 700.54ms. Allocated memory is still 162.5MB. Free memory was 129.4MB in the beginning and 69.7MB in the end (delta: 59.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. [2023-12-15 21:10:48,972 INFO L158 Benchmark]: TraceAbstraction took 66230.81ms. Allocated memory was 162.5MB in the beginning and 777.0MB in the end (delta: 614.5MB). Free memory was 69.1MB in the beginning and 282.7MB in the end (delta: -213.6MB). Peak memory consumption was 400.9MB. Max. memory is 8.0GB. [2023-12-15 21:10:48,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 162.5MB. Free memory was 119.2MB in the beginning and 119.0MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.09ms. Allocated memory is still 162.5MB. Free memory was 126.7MB in the beginning and 102.4MB in the end (delta: 24.2MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 86.07ms. Allocated memory is still 162.5MB. Free memory was 102.4MB in the beginning and 92.6MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 106.00ms. Allocated memory is still 162.5MB. Free memory was 92.6MB in the beginning and 129.9MB in the end (delta: -37.3MB). Peak memory consumption was 33.3MB. Max. memory is 8.0GB. * RCFGBuilder took 700.54ms. Allocated memory is still 162.5MB. Free memory was 129.4MB in the beginning and 69.7MB in the end (delta: 59.8MB). Peak memory consumption was 59.8MB. Max. memory is 8.0GB. * TraceAbstraction took 66230.81ms. Allocated memory was 162.5MB in the beginning and 777.0MB in the end (delta: 614.5MB). Free memory was 69.1MB in the beginning and 282.7MB in the end (delta: -213.6MB). Peak memory consumption was 400.9MB. 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 284 with TraceHistMax 42,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.2s, OverallIterations: 13, TraceHistogramMax: 42, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7285 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7167 mSDsluCounter, 10922 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7953 mSDsCounter, 1346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7256 IncrementalHoareTripleChecker+Invalid, 8602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1346 mSolverCounterUnsat, 2969 mSDtfsCounter, 7256 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5121 GetRequests, 4852 SyntacticMatches, 1 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4694occurred in iteration=11, InterpolantAutomatonStates: 229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 10292 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 3663 NumberOfCodeBlocks, 3663 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4775 ConstructedInterpolants, 0 QuantifiedInterpolants, 30892 SizeOfPredicates, 75 NumberOfNonLiveVariables, 8376 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 56628/58548 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