/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-64.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:11:21,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:11:22,025 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 21:11:22,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:11:22,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:11:22,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:11:22,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:11:22,047 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:11:22,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:11:22,050 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:11:22,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:11:22,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:11:22,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:11:22,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:11:22,053 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:11:22,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:11:22,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:11:22,053 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:11:22,053 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:11:22,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:11:22,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:11:22,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:11:22,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:11:22,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:11:22,054 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:11:22,055 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:11:22,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:11:22,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:11:22,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:11:22,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:11:22,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:11:22,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:11:22,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:11:22,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:11:22,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:11:22,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:11:22,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:11:22,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:11:22,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:11:22,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:11:22,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:11:22,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:11:22,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:11:22,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:11:22,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:11:22,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:11:22,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:11:22,277 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:11:22,277 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:11:22,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-64.i [2023-12-15 21:11:23,232 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:11:23,421 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:11:23,425 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-64.i [2023-12-15 21:11:23,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44659312e/1ad521a857154ccd960aa084ae66e468/FLAGaa19e4788 [2023-12-15 21:11:23,447 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44659312e/1ad521a857154ccd960aa084ae66e468 [2023-12-15 21:11:23,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:11:23,452 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:11:23,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:11:23,453 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:11:23,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:11:23,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b88b4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23, skipping insertion in model container [2023-12-15 21:11:23,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:11:23,606 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-64.i[916,929] [2023-12-15 21:11:23,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:11:23,733 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:11:23,741 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-64.i[916,929] [2023-12-15 21:11:23,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:11:23,844 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:11:23,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23 WrapperNode [2023-12-15 21:11:23,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:11:23,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:11:23,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:11:23,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:11:23,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,936 INFO L138 Inliner]: procedures = 26, calls = 52, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 380 [2023-12-15 21:11:23,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:11:23,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:11:23,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:11:23,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:11:23,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,946 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,995 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 21:11:23,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:23,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:24,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:24,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:24,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:24,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:24,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:11:24,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:11:24,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:11:24,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:11:24,059 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (1/1) ... [2023-12-15 21:11:24,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:11:24,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:24,082 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 21:11:24,090 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 21:11:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:11:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-15 21:11:24,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-15 21:11:24,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:11:24,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:11:24,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:11:24,200 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:11:24,201 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:11:24,740 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:11:24,775 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:11:24,775 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:11:24,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:11:24 BoogieIcfgContainer [2023-12-15 21:11:24,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:11:24,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:11:24,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:11:24,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:11:24,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:11:23" (1/3) ... [2023-12-15 21:11:24,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e65031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:11:24, skipping insertion in model container [2023-12-15 21:11:24,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:11:23" (2/3) ... [2023-12-15 21:11:24,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36e65031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:11:24, skipping insertion in model container [2023-12-15 21:11:24,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:11:24" (3/3) ... [2023-12-15 21:11:24,783 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-64.i [2023-12-15 21:11:24,795 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:11:24,795 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:11:24,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:11:24,851 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;@7decdfa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:11:24,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:11:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 101 states have (on average 1.5841584158415842) internal successors, (160), 102 states have internal predecessors, (160), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-15 21:11:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-15 21:11:24,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:24,870 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:24,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:24,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:24,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2056649316, now seen corresponding path program 1 times [2023-12-15 21:11:24,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:24,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961026065] [2023-12-15 21:11:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:24,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:25,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961026065] [2023-12-15 21:11:25,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-15 21:11:25,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720668830] [2023-12-15 21:11:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:25,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:25,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:25,130 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 21:11:25,152 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 21:11:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:25,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-15 21:11:25,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2023-12-15 21:11:25,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720668830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:25,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:11:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90094728] [2023-12-15 21:11:25,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:25,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:11:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:25,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:11:25,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:11:25,466 INFO L87 Difference]: Start difference. First operand has 143 states, 101 states have (on average 1.5841584158415842) internal successors, (160), 102 states have internal predecessors, (160), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-15 21:11:25,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:25,544 INFO L93 Difference]: Finished difference Result 283 states and 513 transitions. [2023-12-15 21:11:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:11:25,547 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) Word has length 256 [2023-12-15 21:11:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:25,556 INFO L225 Difference]: With dead ends: 283 [2023-12-15 21:11:25,556 INFO L226 Difference]: Without dead ends: 141 [2023-12-15 21:11:25,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 255 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 21:11:25,570 INFO L413 NwaCegarLoop]: 230 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, 230 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 21:11:25,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 230 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-15 21:11:25,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2023-12-15 21:11:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 100 states have (on average 1.55) internal successors, (155), 100 states have internal predecessors, (155), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-15 21:11:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 233 transitions. [2023-12-15 21:11:25,629 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 233 transitions. Word has length 256 [2023-12-15 21:11:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:25,631 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 233 transitions. [2023-12-15 21:11:25,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 2 states have call successors, (39) [2023-12-15 21:11:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 233 transitions. [2023-12-15 21:11:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-15 21:11:25,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:25,641 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:25,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 21:11:25,848 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 21:11:25,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:25,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 917916062, now seen corresponding path program 1 times [2023-12-15 21:11:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436971136] [2023-12-15 21:11:25,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:25,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:25,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860436802] [2023-12-15 21:11:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:25,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:25,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:25,942 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 21:11:25,984 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 21:11:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:26,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:11:26,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:11:26,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:26,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:26,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436971136] [2023-12-15 21:11:26,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:26,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860436802] [2023-12-15 21:11:26,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860436802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:26,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:26,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:26,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370811443] [2023-12-15 21:11:26,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:26,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:11:26,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:26,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:11:26,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:26,279 INFO L87 Difference]: Start difference. First operand 141 states and 233 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:26,334 INFO L93 Difference]: Finished difference Result 354 states and 590 transitions. [2023-12-15 21:11:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:11:26,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 256 [2023-12-15 21:11:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:26,338 INFO L225 Difference]: With dead ends: 354 [2023-12-15 21:11:26,338 INFO L226 Difference]: Without dead ends: 214 [2023-12-15 21:11:26,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 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 21:11:26,341 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 114 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:26,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 458 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:26,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-15 21:11:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 159. [2023-12-15 21:11:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 118 states have (on average 1.5847457627118644) internal successors, (187), 118 states have internal predecessors, (187), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-15 21:11:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 265 transitions. [2023-12-15 21:11:26,369 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 265 transitions. Word has length 256 [2023-12-15 21:11:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:26,372 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 265 transitions. [2023-12-15 21:11:26,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 265 transitions. [2023-12-15 21:11:26,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2023-12-15 21:11:26,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:26,374 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:26,382 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 21:11:26,580 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 21:11:26,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:26,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:26,581 INFO L85 PathProgramCache]: Analyzing trace with hash 523549276, now seen corresponding path program 1 times [2023-12-15 21:11:26,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:26,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32454671] [2023-12-15 21:11:26,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:26,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:26,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216809703] [2023-12-15 21:11:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:26,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:26,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:26,638 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 21:11:26,642 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 21:11:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:26,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 21:11:26,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:11:26,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:26,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:26,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32454671] [2023-12-15 21:11:26,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:26,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216809703] [2023-12-15 21:11:26,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216809703] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:26,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:26,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653919689] [2023-12-15 21:11:26,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:26,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:11:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:11:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:11:26,844 INFO L87 Difference]: Start difference. First operand 159 states and 265 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:26,886 INFO L93 Difference]: Finished difference Result 372 states and 621 transitions. [2023-12-15 21:11:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:11:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 256 [2023-12-15 21:11:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:26,889 INFO L225 Difference]: With dead ends: 372 [2023-12-15 21:11:26,889 INFO L226 Difference]: Without dead ends: 214 [2023-12-15 21:11:26,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 254 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 21:11:26,891 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 113 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:26,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 562 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-12-15 21:11:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 165. [2023-12-15 21:11:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 124 states have (on average 1.5887096774193548) internal successors, (197), 124 states have internal predecessors, (197), 39 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-12-15 21:11:26,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 275 transitions. [2023-12-15 21:11:26,907 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 275 transitions. Word has length 256 [2023-12-15 21:11:26,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:26,908 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 275 transitions. [2023-12-15 21:11:26,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 275 transitions. [2023-12-15 21:11:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 21:11:26,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:26,912 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:26,921 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 21:11:27,118 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 21:11:27,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:27,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:27,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1194493795, now seen corresponding path program 1 times [2023-12-15 21:11:27,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:27,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864194983] [2023-12-15 21:11:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:27,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891155310] [2023-12-15 21:11:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:27,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:27,169 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 21:11:27,196 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 21:11:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:27,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 21:11:27,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:11:27,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864194983] [2023-12-15 21:11:27,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891155310] [2023-12-15 21:11:27,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891155310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:27,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:27,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:11:27,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539933543] [2023-12-15 21:11:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:27,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:27,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:27,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:27,375 INFO L87 Difference]: Start difference. First operand 165 states and 275 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:27,438 INFO L93 Difference]: Finished difference Result 420 states and 694 transitions. [2023-12-15 21:11:27,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:27,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 258 [2023-12-15 21:11:27,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:27,440 INFO L225 Difference]: With dead ends: 420 [2023-12-15 21:11:27,440 INFO L226 Difference]: Without dead ends: 256 [2023-12-15 21:11:27,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 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 21:11:27,441 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 194 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:27,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 670 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:11:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-15 21:11:27,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 244. [2023-12-15 21:11:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 181 states have (on average 1.5469613259668509) internal successors, (280), 182 states have internal predecessors, (280), 60 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 21:11:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 400 transitions. [2023-12-15 21:11:27,450 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 400 transitions. Word has length 258 [2023-12-15 21:11:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:27,451 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 400 transitions. [2023-12-15 21:11:27,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 400 transitions. [2023-12-15 21:11:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 21:11:27,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:27,453 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:27,461 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 21:11:27,659 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 21:11:27,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:27,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:27,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1413348513, now seen corresponding path program 1 times [2023-12-15 21:11:27,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:27,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702560512] [2023-12-15 21:11:27,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:27,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:27,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131846458] [2023-12-15 21:11:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:27,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:27,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:27,698 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 21:11:27,720 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 21:11:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:27,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 21:11:27,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1508 proven. 51 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2023-12-15 21:11:27,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 63 proven. 51 refuted. 0 times theorem prover too weak. 2850 trivial. 0 not checked. [2023-12-15 21:11:28,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:28,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702560512] [2023-12-15 21:11:28,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131846458] [2023-12-15 21:11:28,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131846458] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:28,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:28,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-12-15 21:11:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455029035] [2023-12-15 21:11:28,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:28,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:11:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:11:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:11:28,192 INFO L87 Difference]: Start difference. First operand 244 states and 400 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-15 21:11:28,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:28,520 INFO L93 Difference]: Finished difference Result 452 states and 734 transitions. [2023-12-15 21:11:28,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 21:11:28,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 258 [2023-12-15 21:11:28,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:28,522 INFO L225 Difference]: With dead ends: 452 [2023-12-15 21:11:28,522 INFO L226 Difference]: Without dead ends: 209 [2023-12-15 21:11:28,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 508 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 21:11:28,523 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 260 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:28,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 514 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:11:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-15 21:11:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2023-12-15 21:11:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 134 states have (on average 1.4701492537313432) internal successors, (197), 135 states have internal predecessors, (197), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2023-12-15 21:11:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 317 transitions. [2023-12-15 21:11:28,533 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 317 transitions. Word has length 258 [2023-12-15 21:11:28,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:28,533 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 317 transitions. [2023-12-15 21:11:28,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (56), 2 states have call predecessors, (56), 4 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2023-12-15 21:11:28,533 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 317 transitions. [2023-12-15 21:11:28,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-12-15 21:11:28,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:28,535 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:28,543 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 21:11:28,741 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 21:11:28,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:28,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1592163790, now seen corresponding path program 1 times [2023-12-15 21:11:28,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:28,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328332288] [2023-12-15 21:11:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:28,766 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:28,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351123603] [2023-12-15 21:11:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:28,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:28,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:28,768 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 21:11:28,796 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 21:11:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:28,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:11:28,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:11:29,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328332288] [2023-12-15 21:11:29,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:29,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351123603] [2023-12-15 21:11:29,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351123603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:29,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:29,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475763037] [2023-12-15 21:11:29,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:29,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:29,118 INFO L87 Difference]: Start difference. First operand 198 states and 317 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:29,258 INFO L93 Difference]: Finished difference Result 483 states and 779 transitions. [2023-12-15 21:11:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:29,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 258 [2023-12-15 21:11:29,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:29,260 INFO L225 Difference]: With dead ends: 483 [2023-12-15 21:11:29,260 INFO L226 Difference]: Without dead ends: 324 [2023-12-15 21:11:29,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 255 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 21:11:29,261 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 187 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:29,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 625 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:11:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-15 21:11:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 314. [2023-12-15 21:11:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 230 states have (on average 1.5217391304347827) internal successors, (350), 230 states have internal predecessors, (350), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-15 21:11:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 506 transitions. [2023-12-15 21:11:29,276 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 506 transitions. Word has length 258 [2023-12-15 21:11:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:29,276 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 506 transitions. [2023-12-15 21:11:29,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 506 transitions. [2023-12-15 21:11:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-12-15 21:11:29,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:29,278 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:29,284 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 21:11:29,484 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 21:11:29,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:29,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1007525474, now seen corresponding path program 1 times [2023-12-15 21:11:29,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:29,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120653763] [2023-12-15 21:11:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:29,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:29,517 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:29,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383971675] [2023-12-15 21:11:29,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:29,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:29,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:29,519 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 21:11:29,521 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 21:11:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:29,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:11:29,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2023-12-15 21:11:29,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:11:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120653763] [2023-12-15 21:11:29,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:29,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383971675] [2023-12-15 21:11:29,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383971675] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:11:29,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:11:29,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:11:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145374641] [2023-12-15 21:11:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:11:29,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:11:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:11:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:11:29,948 INFO L87 Difference]: Start difference. First operand 314 states and 506 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:30,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:11:30,067 INFO L93 Difference]: Finished difference Result 525 states and 846 transitions. [2023-12-15 21:11:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:11:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) Word has length 259 [2023-12-15 21:11:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:11:30,071 INFO L225 Difference]: With dead ends: 525 [2023-12-15 21:11:30,071 INFO L226 Difference]: Without dead ends: 306 [2023-12-15 21:11:30,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 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 21:11:30,072 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 177 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:11:30,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 640 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:11:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-15 21:11:30,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 296. [2023-12-15 21:11:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 212 states have (on average 1.4952830188679245) internal successors, (317), 212 states have internal predecessors, (317), 78 states have call successors, (78), 5 states have call predecessors, (78), 5 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-15 21:11:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 473 transitions. [2023-12-15 21:11:30,091 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 473 transitions. Word has length 259 [2023-12-15 21:11:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:11:30,092 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 473 transitions. [2023-12-15 21:11:30,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (39), 1 states have call predecessors, (39), 1 states have return successors, (39), 1 states have call predecessors, (39), 1 states have call successors, (39) [2023-12-15 21:11:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 473 transitions. [2023-12-15 21:11:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-15 21:11:30,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:11:30,095 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:11:30,103 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 21:11:30,300 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 21:11:30,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:11:30,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:11:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1698881697, now seen corresponding path program 1 times [2023-12-15 21:11:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:11:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157955369] [2023-12-15 21:11:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:11:30,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:11:30,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1745442525] [2023-12-15 21:11:30,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:11:30,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:11:30,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:11:30,323 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 21:11:30,352 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 21:11:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:11:30,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-15 21:11:30,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:11:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 852 proven. 186 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2023-12-15 21:11:33,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:11:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 36 proven. 189 refuted. 0 times theorem prover too weak. 2739 trivial. 0 not checked. [2023-12-15 21:11:42,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:11:42,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157955369] [2023-12-15 21:11:42,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-15 21:11:42,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745442525] [2023-12-15 21:11:42,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745442525] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:11:42,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:11:42,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-15 21:11:42,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866015650] [2023-12-15 21:11:42,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-15 21:11:42,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-15 21:11:42,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:11:42,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-15 21:11:42,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2023-12-15 21:11:42,727 INFO L87 Difference]: Start difference. First operand 296 states and 473 transitions. Second operand has 26 states, 25 states have (on average 5.32) internal successors, (133), 24 states have internal predecessors, (133), 6 states have call successors, (78), 4 states have call predecessors, (78), 7 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:11:58,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-15 21:12:03,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-15 21:12:13,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:12:13,792 INFO L93 Difference]: Finished difference Result 1229 states and 1931 transitions. [2023-12-15 21:12:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-15 21:12:13,793 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 24 states have internal predecessors, (133), 6 states have call successors, (78), 4 states have call predecessors, (78), 7 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) Word has length 261 [2023-12-15 21:12:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:12:13,796 INFO L225 Difference]: With dead ends: 1229 [2023-12-15 21:12:13,796 INFO L226 Difference]: Without dead ends: 1041 [2023-12-15 21:12:13,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=1124, Invalid=4132, Unknown=0, NotChecked=0, Total=5256 [2023-12-15 21:12:13,798 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 3137 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 978 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 3156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-12-15 21:12:13,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 2561 Invalid, 3156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 2177 Invalid, 1 Unknown, 0 Unchecked, 13.5s Time] [2023-12-15 21:12:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-12-15 21:12:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 461. [2023-12-15 21:12:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 333 states have (on average 1.4744744744744744) internal successors, (491), 333 states have internal predecessors, (491), 117 states have call successors, (117), 10 states have call predecessors, (117), 10 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-15 21:12:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 725 transitions. [2023-12-15 21:12:13,882 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 725 transitions. Word has length 261 [2023-12-15 21:12:13,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:12:13,882 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 725 transitions. [2023-12-15 21:12:13,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 24 states have internal predecessors, (133), 6 states have call successors, (78), 4 states have call predecessors, (78), 7 states have return successors, (78), 6 states have call predecessors, (78), 6 states have call successors, (78) [2023-12-15 21:12:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 725 transitions. [2023-12-15 21:12:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-12-15 21:12:13,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:12:13,884 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:13,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:12:14,090 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 21:12:14,090 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:12:14,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:12:14,091 INFO L85 PathProgramCache]: Analyzing trace with hash -808113011, now seen corresponding path program 1 times [2023-12-15 21:12:14,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:12:14,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663874744] [2023-12-15 21:12:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:14,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:12:14,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-15 21:12:14,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832740882] [2023-12-15 21:12:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:12:14,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:12:14,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:12:14,143 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 21:12:14,144 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 21:12:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:12:14,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-15 21:12:14,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:12:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2964 backedges. 1959 proven. 276 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-12-15 21:12:19,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 21:12:31,802 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 21:12:31,805 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:12:31,805 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 21:12:31,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:12:32,005 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 21:12:32,006 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 263 with TraceHistMax 39,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-2-2-2-2-4-4-2-4-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∨-3-1 context. [2023-12-15 21:12:32,009 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:12:32,010 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:12:32,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:12:32 BoogieIcfgContainer [2023-12-15 21:12:32,012 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:12:32,015 INFO L158 Benchmark]: Toolchain (without parser) took 68560.51ms. Allocated memory was 250.6MB in the beginning and 392.2MB in the end (delta: 141.6MB). Free memory was 196.7MB in the beginning and 138.7MB in the end (delta: 57.9MB). Peak memory consumption was 201.1MB. Max. memory is 8.0GB. [2023-12-15 21:12:32,015 INFO L158 Benchmark]: CDTParser took 0.57ms. Allocated memory is still 204.5MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:12:32,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.53ms. Allocated memory is still 250.6MB. Free memory was 196.1MB in the beginning and 170.9MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-12-15 21:12:32,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.87ms. Allocated memory is still 250.6MB. Free memory was 170.9MB in the beginning and 157.3MB in the end (delta: 13.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 21:12:32,016 INFO L158 Benchmark]: Boogie Preprocessor took 116.40ms. Allocated memory is still 250.6MB. Free memory was 157.3MB in the beginning and 128.5MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-15 21:12:32,016 INFO L158 Benchmark]: RCFGBuilder took 720.67ms. Allocated memory is still 250.6MB. Free memory was 128.5MB in the beginning and 152.3MB in the end (delta: -23.7MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. [2023-12-15 21:12:32,016 INFO L158 Benchmark]: TraceAbstraction took 67234.11ms. Allocated memory was 250.6MB in the beginning and 392.2MB in the end (delta: 141.6MB). Free memory was 151.7MB in the beginning and 138.7MB in the end (delta: 13.0MB). Peak memory consumption was 155.1MB. Max. memory is 8.0GB. [2023-12-15 21:12:32,017 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57ms. Allocated memory is still 204.5MB. Free memory is still 152.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 392.53ms. Allocated memory is still 250.6MB. Free memory was 196.1MB in the beginning and 170.9MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 91.87ms. Allocated memory is still 250.6MB. Free memory was 170.9MB in the beginning and 157.3MB in the end (delta: 13.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 116.40ms. Allocated memory is still 250.6MB. Free memory was 157.3MB in the beginning and 128.5MB in the end (delta: 28.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * RCFGBuilder took 720.67ms. Allocated memory is still 250.6MB. Free memory was 128.5MB in the beginning and 152.3MB in the end (delta: -23.7MB). Peak memory consumption was 20.8MB. Max. memory is 8.0GB. * TraceAbstraction took 67234.11ms. Allocated memory was 250.6MB in the beginning and 392.2MB in the end (delta: 141.6MB). Free memory was 151.7MB in the beginning and 138.7MB in the end (delta: 13.0MB). Peak memory consumption was 155.1MB. 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 263 with TraceHistMax 39,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-2-2-2-2-4-4-2-4-1 term,while SimplifyDDA2 was simplifying 4 xjuncts wrt. a ∨-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 143 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.2s, OverallIterations: 9, TraceHistogramMax: 39, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 4212 SdHoareTripleChecker+Valid, 14.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4182 mSDsluCounter, 6260 SdHoareTripleChecker+Invalid, 13.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4334 mSDsCounter, 1192 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2698 IncrementalHoareTripleChecker+Invalid, 3891 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1192 mSolverCounterUnsat, 1926 mSDtfsCounter, 2698 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2631 GetRequests, 2539 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 18.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=461occurred in iteration=8, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 727 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 2318 NumberOfCodeBlocks, 2318 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2571 ConstructedInterpolants, 0 QuantifiedInterpolants, 21352 SizeOfPredicates, 26 NumberOfNonLiveVariables, 5214 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 29163/29640 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